#particularly yeosang's perspective made me so soft ahhhhhhhhhh

[hwanghyunjinenthusiast]

What Should We Become?

Title from Turbulence by Ateez

For: @sluttywonwoo my bestie and birthday queen

Rating: M (18+) | WC: 9.0k | Pairing: Yeosang x f!reader x San

You and San have been dating for years, you're well aware of his penchant for doing anything for anyone he loves. You just didn't know that extended to asking you to fuck his best friend, not that you mind.

Tags: est. relationship, boyfriend!san, bestfriend!yeosang, threesome, fluff, smut

Notes: boyfriend!san, you live together, pov lowkey all over the place bc i wanted to know what everyone was thinking soz

Warnings: so many feelings i did NOT plan for, food/alc mention, mention of past toxic relationship (yeo's), jealous san, mentions of san being possessive but specifically not in a gross way, nipple play, biting, oral (f and m rec.), fingering, squirting, they both have big dicks, protected piv, unprotected piv, spitroasting (hate that term so sorry), san cums inside, bc not discussed but they’re safe, open ending

Reader Notes: a bit more specific than usual bc this is for the bestie, ‘girlfriend’ used many times, she/her pronouns used, has breasts and a vagina, mention of marks showing on her skin, WAP

You fumble with the wrapping on the popcorn, cursing under your breath and trying to tear the plastic as Temi weaves in and out of your feet. San’s hand hovers just out of reach, ready and waiting to do it for you, but you pretend not to see it. He loves doing things for you and you love that about him, both because it means he’s considerate and also because it means you have to do less things, but sometimes you want to do them on your own. You know popcorn isn’t exactly the most impactful opportunity to make a stand, but it’s all about baby steps. 

The bag is finally turning in the microwave when his fingers catch at your shirt and he starts tugging you into his orbit. He’s big, broad, but still lean enough that you think you could lift him, probably, not that you’ve ever tried. You’re musing about how many piggyback rides he’s given you and how little you’ve given him when he asks the question. 

“Baby, how would you feel about sleeping with Yeosang?” He sounds nervous, his voice full of trepidation and the fabric of your top clenched in his hand. 

“Like a sleepover? That’s fine with me, I can take the couch if you guys want to share the bed, I know you like your snuggle time. Just know I'm taking Temi with me,” you respond mildly, unsure as to why he’s so on edge. 

You can see the pain enter his eyes when he realizes he’ll need to explain further. 

“No, I mean, like- Ugh! This is so hard!” He sucks in a deep breath before expelling it along with the words, “I want you to have sex with Yeosang!”

“Ohhhh. Yeah, alright,” you shrug, like he asked if you’d eat Italian for dinner, not have sex with another man. A man who isn’t your boyfriend. A man who happens to be your boyfriend’s best friend. A man who happens to be your friend. A man you happen to find incredibly attractive. 

“You agreed to that way too easily,” San pouts, pulling you closer with his arms wrapped around your waist. His fingers dig in possessively, as if to remind you who you really want, who you really love. Like you could ever forget. 

You met San and Yeosang at the same time and spent some time with both of them as friends before San confessed his feelings for you. You’d be lying if you said you hadn’t thought about Yeosang at all in those few weeks, about Yeosang and San, and just how their dynamic would translate to sex. 

But no matter how curious you were, and how prim and polished and perfect Yeosang is (and how much you want to wreck that perfection), San will always be the only man for you. 

How could you be with anyone else when San is the only one who knows you? When he not only gives you his pickles but orders an extra side of them, just for you. When he started wearing socks to bed because you hate other peoples’ feet touching yours. When he always makes sure you have your favorite lunch to eat with your favorite show, and always buys those star pimple patches you like, and brought home a soaking wet, shivering, brown ball of fur that you promptly wrapped up in a fresh-from-the-dryer towel and named Temi. 

San can read all of your moods, knows when you need extra attention or when you need solitude, knows when you want him all over you and when you can’t stand to be touched, knows how to calm you down and how to ramp you up, knows everything there is to know about you. 

He even knows the less cute parts, the ones you try to keep hidden away from everyone else. The jealousy, the insecurity, the fear of inadequacy, he knows it all. 

And he loves you. He loves you so much it shines out of every pore, so much it fills in every crack in your facade, so much he makes you glow with it. There’s no ‘but’, no ‘despite’, he loves every single thing about you because they’re about you. 

The best part is, you’re not even special. 

Sure, you’re special to him, but you’re not the only one he loves like this. He loves all of his friends with such intensity, knows them all better than he knows himself, would do anything for them. Even ask his girlfriend to have sex with them, apparently. 

Making the decision to ask must have been beyond difficult for him. San is made up of a myriad of lovely qualities, but one of the less lovely ones is his possessiveness. It never crosses the bridge into toxicity, never scares you, but he does get a certain look on his face when his friends get too touchy with you. Or when a guy asks to buy you a drink at the bar after he goes to the bathroom. Or when your ex texts you or your male study buddy invites you out for dinner or, or, or. 

But… you like it, if you’re being honest. You like when his eyes get heavy and warm on you and his grip gets tight and his body gets even bigger, somehow. Maybe you shouldn’t enjoy his posturing, but you just can’t help it when you consider what often follows. 

(San blowing your back out.)

(That’s what follows.)

The discussion of details comes later, when your popcorn has cooled enough to eat and San has gotten over his petty jealousy at the thought of you being touched by someone else. He’d gotten petulant about it after like he hadn’t considered that part of the equation, but he seems to have grown accustomed to it. There will be rules, of course, such as, “He can’t cum inside of you. That’s just for me.”

And, “No marks, either.”

“And he has to wear a condom.”

“And-”

“San, we don’t even know if Yeo wants to fuck me yet. Why don’t we get that squared away before we lay out all of the boundaries, okay?” 

“Of course he wants to fuck you,” San almost sounds offended at the idea that he wouldn’t, “But, yeah, that’s probably a good idea,” he concedes. 

“What brought this on, anyway? Is this… something you’re into?” You ask, not expecting a yes but also not expecting the answer you get. 

“No, definitely not. You know I’m not a good sharer. It’s just that Yeo kind of wants to get back into dating but he’s a bit… unsteady after his last experience. I want him to have a good one before he puts himself out there again, for a confidence boost. And I know I can trust him with you, and you with him.” 

It’s… well, shockingly isn’t the right word, because San is kind to a fault, sometimes, but it’s an unexpectedly altruistic reason, and you’re all the more glad you agreed. You would have been fine with it if he just wanted to watch another man fuck you because you think that’s hot, but to know that he really just wants to take care of his best friend makes you even more sure of your decision. 

It helps that Yeosang looks like a prince and acts like one, too. You’ve wondered what he’s like in bed, if he’s the same or if he’s less refined, less quiet, less polite. He’s so strong, you wonder if he’ll throw you around or hold you down, or if he’ll handle you gently and hold your hand. You wouldn’t mind either, if you’re being honest. 

The weight of San’s suspicious gaze tears you from your thoughts. You send him an innocent smile and lean in, batting your eyelashes and puckering up for a kiss. He obliges, of course, deepening it before you can even think to pull away, his tongue gliding over your bottom lip and working its way inside. You love how he kisses you, so thoroughly, so passionately, like there’s nothing in the world he’d rather be doing than you. 

By the time he pulls away, you’re breathless and brainless, all thoughts of anyone but San wiped from your mind. 

San decides to invite Yeosang over when you’re at one of your The Gals nights to pop the question. He literally feels like he’s about to propose as he paces the apartment, doing some last minute tidying and nervously smoothing his shirt every three minutes. It’s not like Yeosang’s never come over before - he’s nearly a regular fixture at this point. You and San had even considered giving him a key. 

This is different though, he’s about to ask his best friend if he wants to have sex with his girlfriend. He still can’t believe he even thought of the idea, let alone pitched it to you, but here he is, rehearsing different ways of broaching the topic as he anxiously awaits Yeosang’s arrival. 

He can’t be too direct or he’ll scare Yeosang away - he can be a bit skittish sometimes - but he also can’t dance around it too much or Yeo won’t figure out what he’s talking about. The guy is smart as hell but kind of slow on the uptake on occasion, a trait San is beyond fond of, though it makes it difficult to be subtle about things like this. 

‘Things like this,’ as if he’s ever done anything of this nature before, he thinks with a wry laugh and shakes his head. Sharing you was never even a concept in his mind until Yeosang had confided in him that he was scared to get back out there after his ex. He’d brainstormed a few ways to help but kept going back to how much you’d helped him through sex when you first got together. He’d been completely inexperienced and insanely nervous until you started guiding him, and everything flowed from there. He wished you could help Yeosang the same way, and then realized the only thing stopping you from doing just that was him. It would have been selfish not to at least ask if you’d be interested, and though he was a little surprised (and annoyed) that you agreed with no hesitation, he still believes this is the right thing to do. 

So when two timid knocks sound on the door, San’s nerves settle to a low simmer and he’s able to greet his best friend as normally as possible. 

The normalcy only lasts for so long, his anxiety ticking back up the longer he makes awkward small talk with Yeosang. He knows Yeo can sense that something is off but he also knows he'll never say anything about it, will just sit here and watch TV and talk about nothing until San is ready to tell him. It’s a wonderful quality of Yeosang’s, the fact that he can read him so well and knows not to dig, but today San wishes he would. He’s not sure he can find it in himself to ask Yeosang if he’d like to fuck you, and a good lead in might be the only way he can bring it up. 

Hours pass and San’s shoulders start to ache with tension. He still hasn’t said anything about the actual reason he invited Yeosang over today, and he’s starting to feel like he could vibrate out of his skin. He really didn’t think it would be this hard, definitely thought it would be more difficult to ask you rather than Yeosang, but here he is. It’s nearing bedtime and you’ll likely return home soon, and then what's San supposed to do? Ask Yeosang if he wants to have sex with you while you’re right here?

Wait. 

Wait, that might be a good idea. You hadn’t discussed when exactly this would happen but from your texts tonight, San already knows you’re turned on, and Yeosang is here, so…

So... he stalls until your key starts turning in the lock and Temi starts screeching in reaction, knowing exactly what that sound means. He’s sure Yeosang noticed his change in demeanor but he doesn’t bother explaining, knowing that Yeo is going to be very confused for however long it takes to go through everything.

He doesn’t want to just spring his plan on you so he leaps up and jogs over from the couch to greet you at the door, shouting, “One sec!” at the living room before pulling you into the farthest corner of the kitchen. You follow with a huff, yelling, “Hi Yeosang!” and turning to San only when Yeo responds, "Hiii." 

“Babe, hear me out,” San begs with his hands on your shoulders as he watches the confusion spread on your face. 

“You haven’t said anything to hear out yet,” you remind him, arching a brow at him in expectation. “You just dragged me in here and you didn’t even let me say hi to Yeosang.” 

“You did say hi to Yeosang, just now-,”

“That doesn’t count and you know it.” 

“Okay, maybe you’re right, but I have to tell you something!”

“Okay, so tell me! I’m not tipsy anymore and I either want to shower or fuck so-,”

“That’s good because I want to ask Yeo right now if he wants to fuck you tonight. What are your thoughts?” 

He hadn’t planned on sounding so frustrated when he told you but when the words start to spill out, he lets them. It doesn’t help that you’re really hot when you’re annoyed and he’s a bit upset that he’ll have to let Yeo have you first if everything goes well. 

“Um.”

The third voice startles him, makes his fingers clench your shoulders a bit too hard and at the breath hissed through your teeth, he lets go. He pets at the sore spots, whispering, “Sorry, sorry, sorry,” until you grab his hands and tell him, “Sannie, it’s okay. Let’s focus on Yeo.” 

He turns cautiously, unsure of what he’ll find as he shifts his attention to the statue that was his best friend. Yeosang stands perfectly still, his eyes alarmed and his mouth half open. San can’t tell if he’s scared or grossed out or offended or all three, and this suddenly feels like the worst idea he’s ever had. Not just the telling him part but the whole thing. Regret settles heavily in his stomach, mortification closing up his throat as he tries to find the right words to say. He’s about to start with the most teary apology of his life when Yeosang starts to speak. 

“Um, I do want to- I would. Like that. I would like to do that,” Yeosang says firmly, if a bit clumsily. He nods emphatically as he speaks, seriously, like this is an honor that’s been bestowed upon him, and San supposes it is. You haven’t fucked many people other than San and San has fucked nobody other than you, so to let someone into that aspect of your relationship is a sign of just how much you both trust Yeosang and each other. 

“Oh,” You and San exhale in unison, “Well, that makes things easier,” San continues. 

Shifting to lean back against the counter, San crosses his arms and looks directly into Yeosang’s eyes, “We have some rules.” You roll yours, pulling San’s arms away from his chest enough to slide between them and rest your back against him to break the rising tension. 

“I like rules,” Yeosang assures you both excitedly, looking more relaxed now that he knows there are restrictions. 

“One: you’re wearing a condom. I got a few different sizes, just in case. Two: you’re not cumming inside of her, even with the condom. Three: no marking-,”

“But you can bite!” You interject helpfully, making San nod and repeat, “Yes, biting is okay, just don’t leave any marks.” 

Yeosang smiles primly, nodding along as well. The look in his eye tells San he’s going over the rules in his head and he has to push down the wave of fondness in order to maintain his stern facade. As well as he knows Yeo would never do anything to hurt you, San still feels like he needs to protect you in a situation like this, and the rules make him feel better about entrusting you to someone else. (San also knows you’re a fully grown person and can make your own decisions, but you’re his girlfriend too and he loves you, deal with it.)

“And if at any point any of us wants to stop, all we have to do is say so,” San declares, making sure you and Yeosang understand that the situation is under your full control. He’s planning on just being a spectator, but if you’re up for it after Yeosang…

You and Yeo agree, exchanging nervous smiles and glancing toward the bedroom. It’s clear you’re both becoming antsy, but San has one last thing to say. 

“Okay, I just want us to remember that we’re all friends here. Well, babe, we’re more than that, obviously, and Yeo, you know you’re my man, but what I’m trying to say is that there’s no reason to be nervous because it’s all love here, right?”

“Right,” you parrot with a squeeze to his forearm as Yeosang smiles and twists his fingers together. He’s clearly still nervous but you seem perfectly at ease and San is reminded once again why this is a good idea. You’re just what Yeo needs to find his confidence again and San hopes that tonight is the first step to him finding his own you, too. 

Things are awkward once you all reach the bedroom. Temi is asleep on the bed so you have to take her to her favorite blanket in the living room. She stays asleep, the sweet little log she is, but you leave out a plate of food just in case she wakes up. It strikes you that you haven’t really gotten to prepare at all and though you’re used to just going at it with San, you need some time to get ready for Yeosang. You feel a bit disheveled after Gals’ Night so you continue straight into the bathroom to strip your dirty clothes and start the shower. 

Peeking your head out from behind the door, you tell the boys, “Just gimme five! Why don’t you get the condoms out, babe?” 

San does so, presenting Yeosang with a grocery bag of four boxes, sizes small to extra-large. He really did cover all of his bases (there were two possibilities that, as his best friend and also someone who’s seen him in wet swim trunks, San knew he could ignore). Yeo avoids his eyes and dips a hand into the bag, grabbing the extra-large box and clumsily pawing at the packaging. He finally rips it open, a roll of 36 condoms spilling out onto the bed, much to his obvious consternation. 

“There weren’t smaller boxes?” Yeosang asks, eyeing the multicolored packages splayed on the sheets. 

“Better safe than sorry,” San responds with a shrug, sweeping all but one condom back into the box before tossing the bag into the closet. 

Yeosang can’t help but agree, stepping back to sit carefully on the bed next to the condom, his hands folded neatly in his lap and his gaze anywhere but on San. He can hear the shower, hear the muted smack of water on tile, knows you’re naked in there. Can almost imagine the drops rolling their way down your body, slipping over the curves that he definitely has not been very well aware of since he met you. 

This feels insane, this whole situation, but Yeosang would rather die than leave right now. It’s not like he’s been lying in wait to steal you from San, but he did have a little bit of a crush on you that he never told him about. He’d known that San had fallen for you practically at first sight, and he could never put himself above his best friend like that. That said, this opportunity is one he’s planning on taking full advantage of. He’s still not sure why San wants him to have sex with you but he’s scared to ask, scared to jeopardize this arrangement and leave here without ever knowing you like this. 

Unfortunately, it’s something he needs to know before he can go any further. 

“San, why do you want to let me do this? You’re not the best at sharing,” Yeosang asks quietly, as if the lower his volume the less likely it is that San will change his mind. 

“Well,” San sighs, looking around the room to avoid his eyes, though Yeosang suspects that’s more for him than anything. “Your last relationship was shitty. She wasn’t nice to you and she was always ragging on you or telling you you weren’t good enough. You mentioned a few weeks ago you were thinking of joining some dating apps, so I wanted to figure out how to boost your confidence when it comes to stuff like this. But all I could think was that I wished you had someone like Y/N to help you through it like I did. And it occurred to me that you do, if I let you.”

The room is silent besides the low rush of the shower and Yeosang’s brain is anything but. Any other guy would just take him to a bar and play wingman, but here San is, offering to let him fuck his girlfriend if it means he’ll get some of his self-esteem back. He’s not sure it’s something he could bear to do, and he’s shocked San is willing to even try with how territorial he can get. Yeosang knows he can trust him though, and that he can trust you. So when San looks at him head on, his expression open and honest, there’s nothing else for Yeosang to do but thank him. 

“You’re a really good friend, San. The best.” 

You get a bit distracted in the shower and it takes much longer than five minutes, but you can’t say you regret it. You feel so refreshed, so dewy, and you know you smell good as fuck so now is the prime time to reenter the absurd circumstances you’ve created with your boyfriend. You’re a little nervous now, the small amount of time you’d been out of the dynamic leaving you feeling off-kilter and unsure. You know San is waiting for you out there though, Yeosang too, and that’s enough to give you the courage you need to push open the door. Steam escapes around you, framing you in what you hope is a flattering haze, and both boys’ eyes snap to you immediately. You freeze in place, your eyes wide and your fingers gripping tightly at the towel wrapped around your body as they take you in. San’s already half hard, likely a Pavlovian response to what happens whenever you’re at least semi-naked in his vicinity (you getting bent over or pushed up against the closest surface). Yeosang’s body is turned away from you so you can’t tell if he’s similarly affected but the expression on his face is that of someone who’s just seen an angel, which bolsters your confidence enough to let the towel slip down a bit further. 

You can feel San’s eyes on you as you tease Yeosang, know he’s smiling a smile far too sweet for this context, and you just can’t resist the urge to turn and look at him. 

You were right, his face is lit up with a grin that could rival the sun, but his eyes are steamy, heavy, possessive. You can tell he’s trying his best to step back and let you and Yeo get to know each other like this, can tell how hard it is for him to even share you at this level of undress, and you vow to yourself that every day this week, you’ll be swallowing his dick. He deserves it, to be taken care of and pampered and spoiled, and you know there’s no one better for the job than you. 

Stepping further into the room, you move to San first, pressing a kiss to his lips and attempting to move on. It gets out of hand quickly, his fingers digging into your hips and pulling the towel tight across your ass. He sucks your tongue into his mouth, nibbling on the tip and letting his own glide against yours before shifting one hand to your stomach and physically pushing you away. You break apart at the last possible second, your head angled forward even as your body is forced to move backward, wanting to kiss him for as long as you can. 

Yeosang waits patiently on the bed, standing when San pushes you in his direction and letting you fix the towel before taking your hands in his. 

“How are you feeling?” He asks, wanting to check in at every step and also desperately wishing he could read your mind, if only to know what you think of him. 

“Good! I’m good. A little nervous. How are you feeling?” 

“I’m nervous too,” he whispers, like he doesn’t want San to hear after you’d agreed there was no reason to be, “But excited.”

“Me too,” you smile indulgently at him, wondering why you suddenly have the conversation skills of an incel when you’re just talking to Yeosang. 

Obviously, you know why. But you wish it wasn’t so, wish you didn’t feel so stilted, wish you could summon that easy rapport you always share with him. He seems to sense this, pursing his lips in that small smile you love before offering, “Maybe if I take my shirt off?”

“Oh. Oh, um, yeah, I think that could help. Maybe,” you breathe, forcing yourself not to blink as his fingers pull the fabric higher and higher, revealing rows of pale abs two by two. You think you count eight before you hear a throat clear behind you and turn to find San shirtless as well. Cooing at his rising jealousy, you blow him a kiss and rotate back to Yeosang, only to find a smirk on his face and his hands on his belt. 

When did he get all confident? You wonder, realizing that the switch happened at the same time San made his green eyes known, and suddenly, his change in demeanor makes perfect sense. San and Yeosang get into a little rivalry every now and then, just some friendly competition, and it seems this is going to be one of those times. Does that make you the prize? You’re not sure but it definitely feels like you’re the winner here, getting to experience Yeosang while knowing that San will be waiting for you when it’s all over. You try to remember you’re doing this for Yeo, not for yourself, but it’s difficult when you’ve got two of the hottest men you’ve ever seen wanting you. 

“Go ahead then,” You challenge Yeosang, just because you’re curious what he’ll do, and he reacts exactly as you expected. He blanches, one hand moving to run through his hair and the other reaching up to cover what he can of his chest, which isn’t much. It’s cute, adorable, really, the way he dropped the cockiness as soon as he was forced to commit. 

You can tell he’s going to need some guidance from here, frozen as he is, so you gently take the hand hiding his pecs and pull him down to sit with you on the bed.  San drops into the chair in the corner of the room but stays silent, letting you and Yeosang work it out. You’re grateful for it, for him, for his quiet strength steadying the both of you. 

“Why don’t we just start with a kiss and go from there? Do you want to kiss me, Yeosang?” You whisper, shuffling closer to him while keeping your grip on your towel. 

“Yes. I do, please,” he answers immediately, scooting over a few inches with his knees pressed tightly together. 

Leaning in slowly, you brush your lips over his. You can feel his cupid’s bow, feel his breath, feel the minute trembling of his bottom lip as he waits for you to kiss him properly. You will, of course you will, but first you want to make him just a little bit crazy. You let your mouth graze his, sink your teeth ever so slightly into that bottom lip, giving the teeniest tiniest sucks every so often. Yeosang shivers against you, his body taut like a bowstring, his fingers gripping his knees so tightly his knuckles go white. He’s trying so hard to restrain himself that you decide to give him more, slipping your tongue into his mouth to glide against his and sighing into him when he tentatively nudges back. 

He tastes like coke and popcorn, the flawless combination of sweet and salty tasting even better on his tongue, making you suck at it in pulses and making Yeosang let out a quiet moan. The sound sends zaps of electricity through you, one of your hands leaving your towel to cup his face and kiss him harder. He’s addictive, his sweet little noises and his sharp jawline, and you force yourself to pull back before you can get too carried away. You can’t just kiss him all night, you’re- Well… No! You cannot just kiss him all night! 

Even if you want to. 

He tries to follow but you still him with your free hand on his chest while you virtually gasp for air, your mind racing as you try to figure out where to go from here. You’re feeling a bit scrambled, slightly out of sorts, so you seek out the person who always knows where you are even when you don’t. 

San’s already looking at you, his eyes soft even as his hands grip the armrests, and he raises a brow when you lock eyes. Instantly, he knows your predicament and helps you out of it. 

“Babe, being on the bed might be more comfy, hm?” He sounds slightly amused and you narrow your eyes at him in a playful glare as you and Yeosang get situated on the duvet. You’re glad his teasing is directed at you though, you have a feeling it wouldn’t be well received by Yeosang at this particular point in time. 

You wish you’d put underwear on under the towel - you’re not quite ready to be buck ass naked in front of your boyfriend’s best friend - but you hadn’t brought any into the bathroom and it didn’t feel right in the moment to go to the dresser, so here you are. One layer from said state, and a flimsy layer at that. However, you were born to persevere, laying down and tugging at the towel until it lays flat over you. Yeosang was busy taking off his pants, thankfully, and when you’re both finished fussing, you take each other in. 

Your eyes rove over him as he sits on his knees, his gray boxer briefs stretched tight over his thighs and his posture immaculate. You can see the outline of his cock, see it straining against the fabric, a couple spots of pre-cum darkened fabric dotted at the head. You can also see the XL condom next to him, and thank God you’re sitting down because your knees just went weak at the thought of even seeing his dick. Let alone touching it. Let alone having it inside of you. You want all of those things, but there’s a nagging thought in the back of your brain that reminds you, Yeosang isn’t San.  

Yeosang isn’t San and he isn’t yours either, so you tell yourself not to get too comfortable with him tonight. You can get a little comfortable though, enough to reach for his hand and pull him closer, enough to ask him, “Do you want me to take this off?”

“God yes,” he answers nearly before you even finished talking, his words more like a sigh as he straddles your legs and drops to hover above you. Your fingers play with the edge of the towel, less so to tease him and more so to give yourself more time before he sees you naked. You’re not shy about your body but you feel shy with him for some reason, so you push it down slowly, baring your breasts to him inch by inch. 

He sucks in a sharp gasp through his teeth as you reveal yourself. His eyes go heavy-lidded and hot on you and he doesn’t look away, his gaze laser-focused and his hands clenched into fists next to your head. He stares, saying and doing nothing long enough that you start to squirm under his attention. 

“You can touch her,” San reminds him. He says it loudly enough that Yeosang turns to level a look at him, making San mime zipping his mouth shut and locking it with a key. He even tosses the key at Yeosang, who catches and offers it to you. 

“Why thank you, been looking for this thing for ages,” you beam, sliding the imaginary key under the part of the towel still covering you, much to San’s obvious displeasure. 

The little moment between the three of you breaks up the tension, allowing Yeosang to feel comfortable enough to shift his weight onto one hand and bring the other up to cover your breast. He keeps it light, squeezes just enough to feel the weight of you in his palm, but he’s already thinking about getting his mouth on you, getting his teeth on you. His thumb brushes over your nipple and you shiver, your flesh rippling under his hand in the most entrancing way. 

He didn’t expect to like teasing you but he does, likes moving to the other side just when you’re starting to settle down, likes grazing his nails over your sensitive skin and making you shiver, likes pulling and rolling and twisting your nipples until you’re moaning and arching into his touch. It isn’t long before his hands aren’t enough, and he’s barely able to ask if he can use his mouth before you’re whining, “Yes, yes, yes!” and sinking your fingers into his hair. 

You taste so good, so fresh and clean after your shower, Yeosang can’t get enough. He sucks, nibbles, licks his way from side to side, never settling on one spot for too long. His teeth don’t ever sink in enough to leave a lasting bruise; he wishes he could mark you but rules are rules, and Yeosang loves rules, so this isn’t one he’ll break. He’s content enough to cover every square inch of your chest in kisses, trailing them down your stomach and over your hip bones. 

“Can I eat you out? Please?” Yeosang nearly begs, hoping you and San will say yes but unsure as this hadn’t been covered in the pre-sex negotiations. 

You’re already nodding, but it must occur to you to ask San too as your eyes find his. He giggles at the look on your face, your lips pouted and trembling and your eyebrows screwed up as you silently plead with San. 

“Yes, okay, fine!” San exclaims, throwing his hands up as if he can no longer stand to look at your puppy dog eyes. 

But Yeosang doesn’t want to overstep any bounds, won’t risk this friendship just for some oral (even if he really wants to go down on you, like A Lot), so he says, “San, if you’re not comfortable with it, I won’t.”

“No, it’s just,” he sighs, “It’s really nice and I’m scared you’ll like it too much.”

He likes oral, but he's never liked it too much.

It’s a little nerve wracking to watch you push the rest of the towel away, fully baring yourself to him. He’s sure you’re the more nervous one here, but this still feels like an important moment in your friendship and Yeosang can’t help but lean down and kiss you, just a simple, gentle kiss in thanks. For your vulnerability, for your candor, for your careful way of handling him. He’s just thankful to you. 

He’s even more thankful when he shoulders your thighs apart and licks into you for the first time. You taste… exquisite? Divine? Like all of the heavens concentrated into one being? Now he gets why San was so worried, because he’s already addicted. You’re wet, so fucking wet, that all he needs to do is glide his tongue through your folds to smear it all over. He likes it messy, contrary to his reserved nature, so he lets himself lose a bit of technique to get as much of you in, on, and around his mouth as he can. 

“She likes when you go inside,” San offers, but Yeosang wants to find his own way, so he grunts in acknowledgement and continues to devour you as he pleases. You’d both said this is for him, he can afford to be a bit selfish. 

You don’t seem to mind, if the way you’re writhing and whining says anything. To Yeosang, it says everything, though he’ll need to hold your hips down if he wants to keep going. Eventually, he does decide to slide his tongue inside you, just because you were starting to sound like you might cry, and when he does it’s mind blowing. The taste of you is so much more rich here and there’s so much of your slick seeping out that he can just drink you right down. It’s glorious, you’re glorious, and he’s desperate to make you cum. 

He fucks you with his tongue, pushes it in and out of your entrance and shifts a thumb down from your hip to rub circles over your clit. He experiments until he finds the pressure and motion you like and from there, it’s easy. Easy to let his groans vibrate into you, to reach up and put one of your hands back in his hair, to let you guide him. Easy to slip one, then two fingers in alongside his tongue. Easy to curl them up, hook them inside, spread you open and get right at your g-spot. 

“Can you squirt?” He slurs, his heart in his throat and his voice reflecting it. He almost doesn’t sound like himself, his voice so deep it rumbles in his chest and his words flowing together. His fingers are still pistoning in and out of you so you can’t answer, but San does, thankfully. 

“Yeah, she can. If you just-,”

“Perfect.”

Yeosang doubles his efforts, sinks another finger inside and moves his tongue up to your clit, pushing at it in pulses as he wraps his lips around it and sucks. He gets a bit rougher and faster with his fingers, fucking you like he means it, and your whines get higher and higher and higher until you’re keening, bucking up against the arm laid over your hips. It won’t be long now, he knows, until you’re flooding him with your wetness and (hopefully) crying your way through an orgasm. 

They don’t always happen together, but he wants to make them happen together for you, so he makes sure to focus on your clit even as he fingerfucks you into oblivion. You like it, he thinks, love it maybe, and soon enough, your pussy is clamping down on his fingers and holding them inside, so insanely tight that he thinks he’ll die when he gets his dick inside of you. You cry out, broken and pleasure-soaked, when you cum. Your clit beats like a tiny little heart and your walls undulate around his fingers as slick gushes out of you in spurts. It’s perfect, you’re perfect, and he’s already mourning the fact that he’ll never get to do this again. 

Once his neck and chest are covered in you, he finishes helping you through your orgasm and lets up. He would push for another but he doesn’t want to be greedy, so he gently places your legs back down on the bed and shakily sits up. You’re still panting, your lashes wet and your mouth open, and fuck if you aren’t the prettiest thing Yeosang has ever seen. The haze in your eyes clears up, your gaze finds his, and it’s two seconds of silence before you’re both giggling your hearts out. There’s something funny about making one of your best friends squirt, and it’s even funnier when it’s your best friend’s girlfriend too. 

“Have fun?” San’s voice breaks up your laughter, his jealousy evident though his restraint is too. Yeosang imagines this must be incredibly difficult for him, and once again he’s struck with the desire to thank you both. Who else can say they have friends like this? Friends who let him into their bed, who share themselves with him, who take care of him. Yeosang is so lucky, so insanely lucky, to have you two. 

“I love you guys,” Yeosang sighs, and it seems San can’t hold onto his annoyance in the face of his affection because his frown becomes a grin that dimples his cheeks and brightens his eyes. You’re looking similarly fond, your smile sweet and your hands gentle when they pull him to you so you can place a kiss on his cheek. 

“Love you too, Yeo,” You and San repeat in unison, on the same page in this as in almost everything. 

Yeosang doesn’t know what will happen after tonight but he’s secure in the knowledge that this won’t do anything but bring the three of you closer. He thinks. 

He doesn’t have long to linger on the thoughts, your hands coming to rest on his stomach and your nails dragging down to catch at his boxers. He’s ridiculously hard, doesn’t need any of the preparation you’re offering, might even cum if you touch him, but he’ll be damned if he doesn’t get your hands on him tonight. He nods when you ask if you can take his boxers off, tries to quiet the racing of his heart as you slowly pull them down. His dick bounces up and against his stomach, smearing precum on his abs before it bobs down heavily. He’s big, he knows, and the three fingers he’d given you should be enough, but he’s considering offering a fourth when he takes notice of the look in your eyes. 

You look like you’re not scared at all, like this is a walk in the park or a day at the beach, and it’s so fucking sexy that Yeosang just knows he can’t let you touch him too much or he’ll blow. You can touch him a little though, he decides, taking your hand when you hesitate and bringing it to rest on his cock. Your hand is smaller than his, warmer and softer too, and it feels miles better than his own. You definitely know what you’re doing, starting to stroke him and running your thumb up and down the frenulum and over the head, a combination that already has Yeosang seeing stars. He wishes he could let you keep going but he’ll cum if he doesn’t stop you, is even a bit nervous that he’ll cum the second he slides inside of you, but that’s a risk he’s dying to take. 

His hand covers yours, squeezing down hard at the base to stave off the orgasm, as he whispers, “Stop, stop, stop, I’ll cum.”

You smile proudly, wiggling your hand out from under his to grab the condom at his side and hold it out. For some reason, opening the wrapper and rolling it on feels momentous, like this is the point of no return. Which is ridiculous because you’ve already done all sorts of things friends don’t do, and because he knows he could stop anytime he wants. The problem is that he doesn’t want to stop, doesn’t ever want to stop, but as he folds your legs up and glides the covered head of his cock over your clit, he decides that’s a problem for future Yeosang. 

Present Yeosang is preoccupied, mesmerized by how his dick covers the whole of your pussy. He could stare for days, months, years, but you wriggle beneath him in impatience so he lines himself up and starts to slowly push in. Your cunt sucks him in, your walls contracting over and over until he bottoms out with a strangled moan. 

“She’s perfect, isn’t she?” He can hear San say somewhere in the background, but his head is swimming at the pressure of you around him and he can’t summon the words to respond. You are perfect, though, your cunt is perfect, and welcoming, and wet as all fuck, and he wishes he could make a home here inside of you but he knows he can’t, so he pulls back and pumps into you again. He starts slow, doesn’t go as rough as he usually likes to but you get impatient fast, wrapping your arms around his neck whispering, “Harder, harder, please,” until he decides to give you what you want. 

He pounds into you, slamming in and out and groaning as he feels your pussy get tighter and tighter around him. He thinks you might already be close, knows that as soon as you cum, he will too and this will all be over, so he breathlessly asks, “Will you ride me? I wanna see you,” pulling out and clumsily switching places with you when your eyes grow bright and you happily sigh, “Yes!”

His view as you climb on top of him is immaculate, your body all stretched out over his and your tits sitting perfectly. 

“You’re so beautiful,” he breathes, watching the bashful grin rise on your face and catching San’s nod in his peripheral vision. He’s also got his lips pursed and his knees bouncing, and Yeosang feels a little bad that he’s taking such advantage of the situation. San gets you all the time though, practically whenever he wants, so Yeosang feels he’s allowed to be a bit selfish just this once. 

He holds his dick up as you lower yourself onto him, swallowing him again in your blinding heat and making his head spin. You resume the quick pace, slamming yourself down on him over and over, and all Yeosang can do is lay there and take it. Well, he could grab your hips and fuck up into you but he’s enjoying being fucked too much to change anything about this. He’s always been the one doing the work in sex and it’s so unbelievably wonderful to just let you take him. 

You like it too, might even love it, he thinks. You’re making the sweetest sounds, your moans and whimpers and sighs intoxicating to him. You feel so much tighter around him like this, too, and he feels like he’s even deeper than he was before, your ass smacking against his balls with every thrust. He’s getting close, he’s getting so fucking close, and he knows he can’t cum inside you but he doesn’t want to cum in the condom either, but you hadn’t discussed where he could cum if not in the condom, and suddenly Yeosang is right there on the edge with no idea what to do.

“San, I’m gonna cum. What do I-,”

“In my mouth, Yeo. Cum in my mouth,” you interject, climbing off of him and stopping his orgasm in its tracks. He grips the base of his cock and peels off the condom as San takes you by the ankles, flips you onto your stomach, and drags you to lay horizontally on the bed. 

“Want me now or want me to wait, baby?” San asks you, one hand on your back and one on his dick. 

“Now, Sannie, I want you now,” you respond, your voice shot and your eyes teary as you turn to watch him line himself up and slide home. You whine his name and the sound soothes him, settles the simmering jealousy in his stomach and replaces it with heat, which only grows as he feels you adjust to him. He must be a bit bigger than Yeosang and that calms him a little bit more, even though he knows it shouldn’t. 

Poor Yeosang still hasn’t cum so San beckons him forward, ignoring how weird it feels to be interacting with his best friend while he’s fucking his girlfriend. Yeosang shuffles closer to you on unsteady feet, his eyes dark as he watches his dick disappear in your mouth. You’re so fucking good at sucking dick he’s almost jealous it’s not him in your throat right now, but he knows he’s got the better end of the deal, getting to fuck you raw and cum inside you. Getting to fall asleep next to you every night and wake up with you every morning. Getting to go grocery shopping with you and brush his teeth next to you and take you on dates. Getting to love you. Nothing could be better than his life with you, and thinking about it has him on the verge of tears and on the edge of cumming. 

He normally lasts longer but he’s had to watch you get pleasured for an hour while having nothing to do with it, he thinks he can cut himself a little slack. It would be kind of beautiful and poetic if you could all cum together, so he slips one hand between your thighs and strums your clit in the way that makes you go fucking crazy, and fucking crazy you go. Your cunt seizes up around him, your back arching further and your thighs shaking. You’d be shouting if you didn’t have Yeosang’s dick in your mouth and though he misses your noises, he’s happy that Yeosang is having such a good time. 

It’s obvious he’s close again, his eyes screwed shut and his breathing labored, and thank fuck he is because San is cumming, fuck, he’s cumming, and you are too. Your pussy clenches around him in pulses, milking his cock and sucking his cum in deeper and deeper until he has nothing left to give. His head swims and through the haze, he can hear Yeosang swearing and groaning, hear your name leaving his lips, and San would be lying if he said it didn’t make him cum just a little bit harder. 

When your cunt has squeezed the last of his cum out of his dick, San drapes himself over your back, pressing kisses across your shoulders and snaking his arms around your stomach. He always feels so cuddly after sex and he knows the comfort is good for you too, so he stays as he is even as Yeosang pulls out and drops to his knees to press a kiss to your lips. That’s something San always does after you suck him off and he’s happy it seems to be an instinct for his best friend as well. 

San wants to let you and Yeosang have your time so he peels himself off your back and stands, lumbering over to the bathroom to get a warm, damp washcloth to clean you up. You may want a shower later and he knows you’ll want to brush your teeth, but this will do for now. 

When he re-enters the bedroom, Yeosang is laying on his back with you snuggled up against his shoulder. You’re talking quietly with each other, giggling like friends do at a sleepover, and San feels his heart grow five times bigger. He squeezes Yeosang’s free shoulder before he climbs onto the bed and settles in next to you. His hand touches Yeosang’s side when he wraps his arm around you but neither flinch away. They've just been closer to each other than they ever have and ever will be again, a little touching is nothing to them now. 

“So… Did it work?” San asks, propping himself up on an elbow and resting his cheek on your arm so he can look at Yeosang. 

“Did what work?” Yeosang responds with confusion, having not even a clue what San is talking about. 

“We did this so you could work on your confidence, remember? So you can start dating again?” 

“Oh, yeah, for sure, for sure,” Yeosang agrees absentmindedly, his eyes locked on the ceiling. 

“Good, we just want you to be happy,” you whisper drowsily. 

Yeosang doesn’t have the heart to tell either of you that he’s happier now than he’s ever been. And that he’s not sure he really needs to start dating again after all. 

"Babe, do you think you could go sleep on the couch? You know I like my snuggle time, and Temi's already there," San whispers in the dark. Yeosang jerks awake, and, affronted, scream-whispers, "I will go home right now if you make her sleep on the couch, you animal."

"I'm kidding, I'm kidding!" San jerks against you, trying to defend himself from Yeosang's swatting arm. All that does is jostle the three of you closer and somewhere, somehow, in the midst of it all, you fall into blissful, sore slumber.

AN: thank you for being born bestie ily more than life itself! i hope this is everything we dreamed of and more 💖 and thank you @petrichor-mingi for beta reading!!!