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crescenthistory · 1 month ago

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hi! i have this really cute idea for regulus x fem! reader. so reader is a animagus and it’s winter time so sometimes she’ll shift into a their animal form, preferably a cat, and goes seek out warmth. but reader is also besties with remus and knows he’s a werewolf, his body temperature runs a lot warmer then anyone else so she goes to room to cuddle. when that happens, regulus immediately knows they reader is with remus and, begrudgingly, goes to gryffindor to steal reader back.

when he gets there, sirius is pouring and complains to reggie that “your girlfriend is stealing my boyfriend” and regulus snaps back by saying “well your boyfriend is stealing my girlfriend” and reader and remus are amused but their bickering but don’t care.

anon. anon. i am giving you the BIGGEST kiss, you don't even know. this is perhaps the best idea i've seen in a while and so i love you. i will be thinking about this throughout all of winter, thank you.

Words: 3k

Warnings: not proofread, fem!reader, references to previous black brothers angst, disgusting amounts of fluff, best friends can cuddle platonically regardless of gender i will fight you on this, background rosekiller and wolfstar, childhood best friend!remus, implied gryffindor!reader, sirius pretends to be jealous but is not

Note: read more about cat!animagus!reader's shenanigans with regulus, wolfstar and james in Sweet Like Honey; Karma is a Cat & Padfoot vs. Whiskers

When Regulus accepted Sirius’ attempt to mend their relationship, he had expected to get his big brother back in full and no more. The person who understands him best, the boy he needed to lean on – it was all he wanted to get out of it. Perhaps he expected to have to grown tolerant of his brother’s friends, but that was something he dreaded, if he at all thought of.

What Regulus had not expected was to be introduced to and fall head over heels in love with you.

Remus’ childhood best friend, the more reserved one of the bunch that he had always seen floating around with them, but whose voice he had never had to roll his eyes at, thus never interacted with. It bewildered him now how he once upon a time barely thought of you, regarded you.

Now he knew you were delightful, and Regulus was positively smitten.

It had been exactly what Regulus had never thought he would get – an easy love. Like your friends, you were open and honest and loyal to the bone, and it spilled over like honey into your relationships with those around you. Once you caught a glance of his clearly lovestruck eyes, you melted, and the puddle was caught delicately in his hands.

Since then, that is where he has held you. In the palms of his hands, close to his heart. He learned more than he perhaps wanted to know about himself during the process of opening up to you, and you showed him a patience he still is not entirely certain he deserves. But you gave him your time, your moments, your touches and your lips, and he received and received without complaint.

When the two most important people in Regulus’ life – one a fervent, natural devotion, another a sassy, passionate rivalry – were in the same hazardous circle of loud-mouthed Gryffindor friends, he eventually had to capitulate that he could no longer just tolerate them. They were family.

God, what love has cost him.

Regulus walked into his dorm room where you have spent more days than not for the past few months, and sighed defeatedly when all he finds there is Barty laying on top of Evan in some odd position that cannot possibly be comfortable.

“Hello to you too, Black. Thrilling to see you.” Barty’s voice was laced with sarcasm, but there was no menace there as of yet.

“Yeah, yeah,” Regulus grumbled as he threw his bookbag onto his bed and sat down. “You seen Y/N lately?”

“You mean since you were all snuggled up this morning? Nah.”

Regulus rolled his eyes painfully hard at his oldest friend, murmuring a soft sod off before tossing whatever was closest – his pyjama t-shirt – in Barty’s general direction, missing by a good metre. He is a seeker and not a chaser for a reason.

“What of it, Reg?” Evan mumbled, but it was distorted by Barty’s elbow being more or less shoved into his mouth. He could never sit still.

“Just figured she’d be here, ‘s all. She finished class before me.” Regulus falls down onto his bed, curls spilling onto the emerald sheets as he stares at the ceiling, picturing you there and then immediately kicking himself for being that down bad. Then reminding himself with the therapy-speech Sirius has been teaching him, love is a strength not a weakness, it’s good to feel your feelings. Yada yada. "It's been a long day."

“Maybe she got tired of your sorry ass.” Barty laughed at his own joke only to be smacked by Evan’s finally-freed hand.

“Or yours, you sod.”

“Nah, Treasure absolutely adores me.” Barty propped himself up to flash you both a grin. “See, unlike you, I’m fun.”

“Interesting word to substitute insufferable with.” Evan said, leaning his face up from underneath Barty, as if to intimidate him.

“You love me,” Barty drawled before kissing the blond soundly.

“Would you guys please stop flirting?” Regulus’ voice was closer to a groan than anything else. He pressed the backs of his hands to his eyes, seeing stars and thinking of you. Stupid poetic feelings.

“Just because you can’t keep track of your girl doesn’t mean we can’t enjoy ourselves.” Barty pointed an accusatory finger at Regulus. “I would classify that demand as rude.”

“Bite me.”

“Only if your girlfriend says yes.” This time it was Evan’s turn of tuning into Regulus’ torture.

“And she would.” Barty winks at him.

This time it’s a pillow Regulus throws at them, and it lands perfectly, smack in the middle of Barty’s face.

“Oi!” He calls as he throws it back. “Either you quit it, or you throw me your jumper, it’s freezing in here.”

“You’re literally in bed, Barty.” Regulus looks at him, unamused. “Just–”

He trails off, gaze falling from Barty to the wall behind him as he pieces the puzzle together and realisation dawns on his face. The other boys seem to have caught on as they both cock their heads curiously at him.

“Of course,” Regulus whispers, first in marvel and then it morphs into something between exasperation and disgust. “Of course.” At last, he gets a determined look on his face, slapping his palms on his knees as he sits up from bed and grabs his jumper to go.

“Excuse you, what just happened?” Barty says, increasingly louder throughout his sentence as he realises Regulus is headed for the door, thick wool jumper tucked under his arm. “Hey!”

Regulus throws the boys a look over his shoulder, smirking at them and shaking his head before shutting the door and walking off. He barely catches Evan’s “shush, you baby, I’ll warm ya” before he is out of earshot.

A man with a purpose and half a plan stalks off, beginning the treacherous journey from the Slytherin dungeons to the Gryffindor dormitories.

What is the single thing Regulus knows can keep you from him when you’re otherwise attached at the hip? The cold.

What is the one person you go to for anything and everything, especially dealing with the cold? A certain ragged boy with a wolfish smile that he knows is to be found only behind the portrait of an increasingly annoying woman.

“Password?” The Fat Lady asked, quirking a brow ridiculously high as she regards Regulus with a mutual disgust.

“Catulus leonis.” Regulus does not bother holding back the eyeroll at the ridiculous passphrase.

She looks at him a moment or five longer than she needs, almost as if considering not letting him in despite his answer being perfectly correct, before she finally swings open the door wordlessly.

Regulus mutters a harsh thank you, Pureblood upbringing having knocked some politeness into him he is just not able to forego, no matter how severe his beef – as Sirius says – with the woman is.

When he finally approaches the offending dorm, the door opens fast enough to knock some wind across his face, and he is met with a set of black curls and a superfluous frown that both match his own.

“Regulus. Thank Merlin.”

“Good to see you too, Siri. How'd you know it was me?”

"Recognised your footsteps. Now, c'mon."

Regulus pushes in past his brother and his eyes immediately find Remus Lupin’s bed. To the unaware, it would just look like the scrawny boy was innocently laying on his bed, head propped against a mountain of pillows and reading another one of his paperbacks.

However, Regulus knew better and could see the perfect girlfriend-shaped lump underneath Remus’ jumper, shielded by his arms as he held his book over his stomach.

Or, at least shaped like this rather specific form of his girlfriend.

“Hello, amour, I’ve been looking for you.” Regulus’ voice is addressed to the bump on Remus’ chest, but he looks up at him with a quirked brow and a smug smile tugging on the corner of his lips.

“Didn’t know we were on a pet name-basis, Reg. Good to know.”

“Absolutely not.” Sirius and Regulus chorus at the exact same time, and Regulus fights back the wince at how painfully similar they are in this moment.

“Reggie,” Sirius finally whines. “Your girlfriend’s been stealing my boyfriend for the past two hours. Do something!”

Despite having a very similar sentiment settled in his own chest, Regulus gives his brother a pull yourself together look as he comes up to stand beside him, near the occupied bed. “I’m fairly certain your boyfriend has stolen my girlfriend equally as much,” he tuts.

“Whatever, just do something.” Sirius waves his hand towards Remus’ still very relaxed state with something a bit too close to a pout forming on his face.

“There’s no need to be jealous, Pads, the poor girl’s just cold,” Remus chides, with a teasing glint in his eye that clearly shows he knows his boyfriend is being dramatic for the bit and not actually upset. "Gotta help 'er out."

“‘M not jealous. I’m needy.” Sirius’ deadpan stare is not affected by Remus’ laughter nor Regulus’ barely-contained snort.

“Glad you admit it,” Regulus says slyly, patting Sirius on his shoulder twice, who immediately shrugs his hand off with a scowl.

“Like you’re any better, you slithered all the way up from the snake pit to fetch her. At least I’m open about it.”

Before Regulus has the chance to retort, Remus puts his book down in his lap and reaches out a hand for Sirius, which he immediately takes. “I told you you could come lay in the bed with us, love,” Remus murmurs and swipes his thumb over the back of Sirius’ hand.

If he did not feel the same way, Regulus would have given Sirius hell for how he seemed to absolutely soften in the sunlight of his boy. “Yeah, I know, Moons, I’m just being theatrical.”

Remus laughs once more, and this time his chest rumbling results in a distinct prrrt! coming from the inside of his jumper. Up through the collar, cheek smashed against Remus’, comes the tentative head of beautiful grey-and-white fur and slow-blinking yellow eyes, still riddled with sleep.

“Good morning, amour,” Regulus coos, ignoring Sirius’ snort as he drops down to squat beside Remus’ bed so his face is lined up with yours.

You pur, stretching beneath the fabric, a single paw escaping beside your head through the collar as you roll over onto your back. Your eyes remained trained on Regulus, and though he knows cats can’t actually smile, he swears you were smiling at him.

“Sorry to wake you, princess,” Sirius drawls as he looks down at you from where he is leaning on the bedpost beside Remus. “But have you seeped up enough warmth for me to get my boyfriend back yet?”

You make a faux hissing sound before ducking your head down, so it’s just barely hidden by the collar.

Remus laughs heartily, setting his book completely away this time so his hand can come up to rest on your cat-form, petting you through his jumper. “It’s alright kitten, take your time.”

The exposed paw lightly hits Remus’ cheek in retaliation, and this time it is Sirius and Regulus’ turn to laugh at his expense. “Ow! I share my warmth with you and this is what I get in return?”

From the movement beneath the fabric, Regulus assumes you’re nuzzling your head against his chest in apology.

“Amour, I brought your favourite jumper of mine and promise to make you so much hot cocoa if I can steal you back. We can be in your dorm room instead of mine, it’s warmer in there, right?” A smile remains consistent on Regulus’ face as he talks to you.

Sirius pats him on the back, murmuring something about you’re so whipped that he doesn’t bother to pay attention to.

More movement beneath the fabric, and then suddenly your ears are poking out of the neckline again – because why would you make it easy for yourself and use the big exit, when you can squeeze your way through a tight opening? You’re a cat after all.

Remus seems to be thinking the same as he laughs while you attempt to climb out beside his head, soft fur brushing against his skin and making up for the occasional claw you use for traction.

Regulus attempts to bite back the coos as he sees more and more of you, recognising your movements as sluggish with sleep, no doubt coaxed into it by finally being comfortable.

“Thanks for today, see you again tomorrow, same time?” Remus teases, head turned towards you as you headbutt him lovingly, finally fully escaped from his jumper and standing on his shoulder. He nuzzles you back and scratches your head in goodbye.

Another prrrt! escapes you in greeting as you saunter your way across Remus and plop onto the small strip of mattress on his side where Regulus’ hands are open and ready to receive you.

“Hi, sweetie,” he whispers as you allow him to scoop you up into his arms while he’s still squatting beside the bed. He holds you like an infant, tight to his body and securely supported. You immediately begin to purr loudly, nuzzling your head even further into his neck and shoulder.

Regulus does not bother to hold back the slight giggle as your caresses tickle him.

“Good gods, are you two sappy,” Sirius groans, but when Regulus looks up, there is a wide grin on his face. A slightly teasing one admittedly, but a grin nonetheless.

Then, Regulus recognises where Sirius is grinning at him from – properly cuddled up besides Remus on the opposite side of the bed, arms beneath his jumper, soaking up the leftover warmth from you.

“Wait– how did you get there so fast?” Regulus’ voice is almost incredulous, stopping his greeting of you – earning him a harrumphing meow – to narrow his eyes at his brother. “I didn’t even notice you move from beside me.”

“What can I say; I am a dedicated man.” Sirius nuzzles into Remus’ cheek, not much unlike how you were mere seconds ago, albeit his involved a tad many more kisses.

“You’re weird, that’s what you are,” Regulus laughs as he stands up with you in his arms.

You turn around to look up at him with those big, slitted eyes of yours. When you extend your neck further towards his face, Regulus lifts you higher so you can give him the cat-kisses you so evidently wanted, his lips curling at your touch.

Sirius lifts a brow at the two of you. “Yeah. I’m the weird one.”

Regulus scoffs at him, but when you continue to caress your furry cheeks against his lips and chin, it is difficult for any menace to remain serious.

“Thank you for your deviant supernatural warmth keeping my girlfriend alive, Lupin, but I’d like to steal her away from you now.”

“By all means, Black, you’ve already stolen her from me once,” Remus harrumphs, pretending to be some scorned faux older brother but his eyes betray his facade; he is happy for you.

Regulus chooses to ignore it nonetheless.

“Brother.” He nods at Sirius. “Soon to be brother-in-law.” He nods at Remus. “We bid you goodnight.”

“Try not to undo all of Moony’s hard work by freezing her right back up with your freakishly cold feet!” Sirius calls after him as he heads towards the door. He then promptly gives out a soft yelp that indicates Remus corrected him in some physical way.

“Goodnight love, goodnight Reg,” Remus calls instead.

“Yeah, bye, doll!” Sirius adds, whispering more to himself, “he’s mine again now.”

You give out a tired meow that is so cute it makes Regulus’ heart clench with endearment. You cuddle properly up into the crook of his neck as he carries you out, softly closing the door behind him with a smile.

He shifts you in his grip so he can look down at you more carefully. “You are so unbelievably predictable. And even cuter than that again, which is saying something,” he murmurs to you and you respond with quiet meows.

He looks at you curiously. “Are you going to remain in cat form the whole night?”

Your tail twitches teasingly, your only other response is a quiet prrt as you close your eyes into the warmth of his neck again. He laughs, covering your feline body with his hands as he carries you, to keep the warmth in.

He sneaks into your dorm – thankfully often unoccupied as Marlene is with Dorcas and Mary is with Pandora – and settles you down onto your plush mattress and pillows. He undresses and gets ready for bed, while you’re resting your head on the pillow, observing him, but just before getting under the covers, he slips on his jumper.

“It’s so soft I could cry, Reggie,” you had whispered to him when you cuddled up to him when he wore it around you for the first time. “I fear I can never let you go now.”

Regulus slides under the blankets with a knowing smile, opening the hem, allowing you to creep under, chest against chest with your head poking out of the collar to rest at the bottom of his neck.

“I'm no werewolf, but I’ll keep you warm with my love, amour,” he whispered to you in the dark, one hand combing through your fur protectively underneath his own jumper.

He swears, he could hear the little cat snort against his skin.

Regulus fell desperately deeper in love.

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