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reiding-writing · 11 months ago

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melatonin and oxytocin [ s.r ]

Summary:

You and Spencer pair up in an inn room that just happens to have one bed. Oh, and did you know that physical contact promotes better sleep? Well, that’s what Spencer says anyway. And he’s always right.

WARNINGS: literally none, crazy i know

pairing: spencer reid x gn!reader

genre: pure fluff, friends to lovers

wc: 5.1k

masterlist!!

a/n: here’s my official apology for all of the angst i put you through in erotomania 😭 i dont write pure fluff like ever so please bare with me if it’s a little stunted 😭🫶 also this is very very loosely based of off 05X21 - Exit Wounds.

The team was currently in Alaska working on a case, set up in a small inn during their stay. The issue was, they could only provide 4 rooms despite there being 8 members on the team, meaning that everyone had to double up for the night.

Spencer’s first instinct was to turn towards Morgan, but before he even had the chance to open his mouth Morgan was profusely shaking his head. “Absolutely not,”

“Wha-” Morgan held up his hand before Spencer could question his decision. “Never again. You are some kind of vampire I swear,”

Spencer furrowed his eyebrows in Morgan’s direction, met with a shrug. “This man needs his beauty sleep,”

“Dibs!” Garcia leaned over the back of the couch she was sat on so she could grasp at Morgan’s forearm. “I call dibs.”

Morgan chuckles at Garcia’s enthusiasm, leaning over to place a kiss on the crown of her head. “Alright, me and you babygirl,”

Garcia’s soft giggle is joined by a yawn from where you’re sat next to her, and you rub your eye with your knuckle as you lean your head against the back of the couch. “Can we just all choose quickly? I’m exhausted-”

The end of your sentence is cut off with another yawn, only further emphasising your point. Your words were definitely more blunt than usual, your tiredness most definitely making you more irritable.

“I uh- You can share a room with me if you want,” Spencer’s voice is timid as he speaks, and if he wasn’t stood directly behind you you’re not sure you would’ve heard it.

"Sure great, let’s go-" You drag one of the room keys off the small table in front of you as you stand, throwing your travel bag over your shoulder and walking around the couch, placing the palm of your hand flat on Spencer’s back to push him towards the stairs up to the rooms. “Goodnight.”

Your call back to the rest of the team is more of a custom than a genuine wish for them to get a good rest, and if you were more alert you’d probably hit yourself over the back of the head for being so blunt. But politeness wasn’t on your mind right now. You just wanted to sleep.

You fumble with putting the key in the door through your drowsiness, but eventually manage to push the door open to the room.

It’s about what you’d expect from somewhere small like this in the middle of nowhere.

The flooring was dark, with a small rectangular rug in a wine red colour in the centre, the walls an off-white with a slightly suspicious looking water stain in one of the corners. There was a dark-brown leather armchair leaned against the wall next to an ajar door leading to a bathroom, with a decorative pillow of the same shade of red as the rug on the floor. The arm of the chair had a noticeable rip, most probably from a child who’d got bored whilst staying there.

The room was warmly lit from the two lamps on the two side tables, the only other thing on them a basket-weaved mug coaster. The over head light was notably turned off, unable to be used at all seeing as it didn’t even have a bulb in it.

And of course, there was a single queen-sized bed in the centre of the room, it’s frame the same dark wood as the floorboards and definitely just as worn.

Although, the duvet and its pillows seemed brand new, a clean, sparkling white that stood out against the dis-colouring of the wall behind it, a throw blanket over the end and two decorative pillows on top, again matching the other decorative pieces in their dark red colouring.

You didn’t even have to look over at Spencer to know that he was definitely a little perturbed.

With a sigh your drag yourself into the room, dumping your bag on the armchair and unzipping it to pull out a pair of shorts and a t-shirt to change into.

Spencer however, remained stood in the doorway, seemingly considering whether it would be a better option for him to go out and sleep in the SUV.

His rational brain told him to just suck it up and get on with it, but he couldn’t help that subconscious voice in the back of his head that rattled on about how unhygienic hotel rooms are, especially in small rural areas like this.

Not only that, he was also battling the reality that he would inevitably have to share a bed with you, even if it was large enough to house both of you without any unintentional physical contact; He was at least grateful that it actually looked clean.

“Can I- leave the light on?” He breaks his own train of thought as he pushes the door closed with his foot, surrendering to the inevitability of spending the night in this dingy room with you.

You give him a short nod as your answer, joined by your third yawn in the span of five minutes. "God I genuinely think I could fall asleep standing up right now-"

Spencer chuckles at your yawn and nods at your words, leaving his bag on the floor as he takes a seat on the left edge of the bed, pulling out a copy of Les Fluers de Mal and flipping through it until he found the page he’d left on.

“It has been scientifically proven that it is physically impossible to fall asleep while standing, as your cerebellum would be triggered in response to the lack of stimulation which would cause a reflexive response to make you sit down.”

Of course Spencer would know something like that.

You rifle through your bag to find your toothbrush and travel toothpaste. "So what I’m hearing is I could fall asleep standing, but then i’d just end up sitting down," You zip your bag shut again once you’ve retrieved everything you need, pushing open the door to the small en suite bathroom, which thankfully, was much newer than the bedroom. "That sounds like falling asleep standing up if you ask me,"

Your voice muffles ever so slightly as you shut the door behind you.

“Yes, that is a fairly logical conclusion,” He nods slightly as he reads, not taking in the fact that you can’t see him from behind the door.

“Although I still believe it doesn’t quite count as 'falling asleep standing', as when you sit down your brain then activates its natural response to the loss of stimulation in order to put you to sleep. You see, it is impossible to enter the first stage of the sleep cycle within that split second between standing and sitting down, meaning that your body would still be awake.”

You chuckle lightly as you stick your head out of the bathroom once you’ve finished changing, toothbrush in your mouth as you dump your work clothes over the arm of the chair.

“The act of falling asleep occurs when your brain begins to transition from a state of wakefulness to a state of deep sleep. This is signalled by a spike in alpha-waves, which creates a relaxed feeling leading to…” He trails off as he watches you walk past him, figuring you’re not listening to him anymore.

"Why’d you stop?" You straighten your posture as you stop momentarily in your tracks, turning your head towards him.

“Oh, I- thought that you weren’t interested in listening to what I was saying.” His reply betrays his surprise at your engagement.

“I was simply going to add that when you are sitting and the spike in alpha waves occurs and you begin to fall asleep, your brain will automatically trigger a response that causes you to slump forward, hence causing you to sit down.”

Your body subconsciously mirrors your brain’s interpretation of what slumping over means as you walk past him again to spit out your toothpaste.

"Oh- like when you’re in a car and your head falls forwards-"

“Yes, that is a fairly similar example actually. Your brain receives the sign that you are beginning to fall asleep when your head starts to nod forward, and this causes a trigger within the brain’s automatic control system that in turn activates a response that makes you sit up straight so that you don’t fall asleep at the wheel.” As Spencer speaks, he shuts his book, leaving it on the side table as he unpacks his bag so he can also change.

“It’s actually rather surprising how the brain is capable of performing such complex tasks that we sometimes don’t even realise,” He said with an astonished gleam in his eye.

"Huh, the more you know-" You give a satisfied nod at Spencer’s little exposition, taking a seat on the right side of the bed and leaning over to turn the lamp off, allowing Spencer to leave his on as he retreats into the bathroom.

You’d never express it verbally, especially not to Spencer’s face, but you quite liked when he’d ramble about topics he was interested in and knew a lot about, it was both educational and weirdly charming.

You let out another yawn as you pulled back the duvet to lie down, extremely grateful that the mattress of the bed was just as new as the bedding itself. Looked like you might be able to get a good night’s sleep after all.

"Did you know that the human brain has over 100 billion neurons making over 100 trillion connections between them. Each second, a 100 billion electrical messages pass from one neuron to another. It is really quite fascinating." Spencer continued his tangents as he exited the bathroom, now clad in a black t-shirt and a pair of tardis pyjama pants that you found oddly endearing.

"That’s a lot of electrical signals…"

"A lot is an understatement" He chuckled, moving over to the left side of the bed and carefully laying himself down, making sure he wasn’t accidentally making any contact with you.

"It is so complex that it is believed that only a portion of our neurons actually fire each second, meaning that there is potentially trillions of more electrical messages going to unused parts of our brain." He seems to get lost in thought, staring up at the ceiling as he considers the idea further.

You hum softly with a small nod at his assessment, turning to lie on your side so you were half-facing him as he looked up at the ceiling, and you couldn’t help but find yourself tracing his jawline with your eyes as you studied how the dim lighting from the lamp besides him gave it even more definition.

Spencer turns to look at you after a few moments and notices your sleepy expression, feeling a tinge of guilt at keeping you awake since you are clearly exhausted. “I should probably shut up and let you get at least a little sleep. “ He chuckles awkwardly, “Sorry for rambling on, I kind of got carried away.”

"It’s okay… I like listening to you…" You rub one of your eyes with your knuckle as you struggle to keep them fully open, eyelids fluttering as you blink repeatedly to keep them from closing shut. You weren’t done looking at him yet.

Spencer’s cheeks turn a light shade of pink at your confession of enjoying listening to what he had to say.

He then starts to talk again, his voice quieter as he tries to accommodate it to your tiredness. “It’s not the brain’s electrical signals that dictate if you sleep or not, by the way. It is actually a neurotransmitter called melatonin.”

“Melatonin is the hormone responsible for controlling your sleep cycle, and it’s responsible for that sleepy feeling we get when we're tired.”

"Mhm…” You nod softly against the pillow, that was one fact you were definitely familiar with thanks to the joys of university, although hearing it come from Spencer’s mouth just made you want to go along with what he was saying like it was brand new to you.

“Melatonin also helps to regulate your body’s circadian rhythm, which is basically your daily schedule,” Spencer explained.

“Our bodies are naturally conditioned to go through a cycle of sleep and wakefulness. During the day your body will release cortisol and adrenaline for stress management and focus, and during the night your body will release melatonin to help you relax, making you feel sleepy.”

“Well i’m certainly feeling the effects of melatonin right now…” You try to keep up your responses to what Spencer is saying without falling asleep, but you can’t help closing your eyes as you focus on the softness of his voice.

Spencer smiles at your response and nods as he looks at you and notices your eyes are closed. “I should probably stop rambling then, since I don’t want to keep you awake for any longer…” He spoke even softer if that was possible, his eyes trailing over your forehead and down the bridge of your nose.

"I like your voice Spencer, it’s calming…" Your words are half muffled as you mumble them against your pillow. "And your facts are interesting…"

“Huh?” He asked you with a raised eyebrow, having not quite heard what you’d said.

"I like hearing you…" You simplify your words a little bit as you repeat what you’d said, a little louder this time, and you force your eyes back open again to look at him.

Spencer’s cheeks immediately turn pink at the compliment, and his eyebrows shoot up in surprise. He is then quiet for a moment as he tries to process what you said.

“You… like hearing my voice?” He asks, a tinge of confusion evident in his voice, to which you reply with a soft nod and a small hum of affirmation. "I hate it when people interrupt you…"

Spencer’s cheeks remain a light shade of pink as he tries to process what you said, and he stays quiet for a while, trying to think of how he could respond to your little confession.

“I… Well… thank you-” he replies, trying to stay calm whilst also hiding his flustered smile.

“No problem…”

Spencer smiles at your response, eyes studying your expression in an attempt to better understand your feelings. All that he can make out however is your hair, and your tired and half-closed eyes.

“You know, you should probably go to sleep.” He chuckles softly, “It’s quite late after all,”

“Yeah… that’s a good idea…” Your voice is quiet as you mutter out an agreement, but you can’t help from feeling a mild disappointment that your small conversation with Spencer was coming to an end.

“Did you know it takes an average of 7 minutes to fall asleep?” You murmur out the fact as a last resort, half-hoping that it will encourage Spencer to keep talking to you.

“Well, it depends on the person actually” His reply is soft and non derogatory, and his eyes remain locked on the peaceful tiredness in your expression. “On average it takes about 15 minutes of lying down in a relaxing environment to fall asleep, however for some people it might take 20 minutes or more. On the other hand, some people can fall asleep much quicker, with one study finding that it only took an individual 65 seconds to fall asleep.”

“I wish I was that person,” You shift slightly to make yourself more comfortable, pulling your right leg upwards towards your chest and incidentally brushing it against his in the process.

Spencer is lost in his emotions as he stares at you, and it takes you turning your head against the pillow for him to realise that he wasn’t fully listening to what you’d said. “Oh- Yeah, pretty lucky huh?”

His eyes avert from you after that, suddenly very intrigued by the water stain in the top corner of the wall opposite where you were laying down, trying to remind himself that it is inappropriate to stare at his colleagues like that.

But despite all the rationalisation, his heart continues to beat at an accelerated pace and he begins to feel strangely excited seeing you move around the bed. You might be tired, but he certainly wasn’t. Not anymore.

Spencer turns to look at you again as you cover your face with your arm, seemingly protecting your eyes from the light of the lamp on his side table.

He’s silent for a moment as he finds himself staring at you again, mentally punching himself for finding himself getting so lost in your facial features.

"Do you want the light off?" He asks you, keeping the tone of his voice gentle.

“No it’s okay,” Shake your head underneath your arm, “You can keep it on…”

You knew about Spencer’s phobia of the dark. The whole team did. It was pretty much a given after what he went through a few years ago with Tobias Hankel. And you wouldn’t mind sacrificing your comfort of sleeping in pitch black darkness if it meant that Spencer wouldn’t be uncomfortable or afraid.

Spencer gives a nod at your answer, and you can tell he’s relieved that you didn’t want him to turn it off. After a few seconds he speaks again.

"Can I ask you something?" He says, keeping his voice soft.

“Mhm?” You move your arm from your face to rest against your forehead so that you can look at him as he speaks.

Spencer's cheeks immediately turn a light shade of pink again as he meets your eyes. “It's… uh… Well, it's a strange question,” He replies awkwardly

“Would… you mind if I… uh….” He pauses, struggling to find the right words. “Would you mind if I put my arm around you?” He eventually manages to say, keeping his voice soft.

“Huh-?” You let you arm fall back down to your side as you process his question, eyes blinking more awake and Spencer’s cheeks only turn more red as he sees your surprised expression.

“Well… You see… I- it's a common thing that people do when sleeping… to… uh… to hold one another..” Spencer replies, still keeping his tone soft and gentle. He begins feels incredibly stupid for even bringing up this topic, hastily trying to explain himself before it has the opportunity to become awkward.

“Is it?-” Your eyes flicker around his face, your eyebrows furrowing ever so slightly as your exhaustion seems to momentarily disappear.

“Uhm… well… usually it’s for romantic reasons,” He replies, his face turning a light shade of pink yet again. “But… uh… I’ve … heard… that some people like to cuddle in a… platonic way… to help them fall asleep…” His voice threatens to waver slightly as he speaks, and he hides the lower half of his face in the bedsheets in an attempt to hide his cheeks, not wanting you to see how red he’s gone.

“Oh- Uh- Well, if you think it’ll help…” Your subconscious mind knew that Spencer was pulling those facts out of his ass, but you didn’t have the mind to care, not when he was practically openly inviting you to drape yourself all over him.

Spencer perks up when you give him the go-ahead, gently wrapping his arm around you and lightly pulling you closer to his body as he turns to look at your face. “Is this okay?”

His expression screams nervousness as he stares at you, praying that you don’t find his actions uncomfortable.

“Mhm…” Your response is short and direct as you nod, adjusting yourself to lie with your head resting under his chin, allowing your arm to drape over his torso like he’d done yours and bringing your leg up to rest over his waist.

Spencer can’t help but smile as he feels you make yourself more comfortable, sliding one of his arms underneath you and moving the other to hold the inside crease of your knee.

“Do you know that physical contact has a calming effect on people’s minds?” He keeps his voice gentle, as he always does.

You give a soft hum that gently vibrates against the skin of his neck, sending a small shudder down Spencer’s back.

He carefully adjusts the position of his head so that he can keep looking at your half-closed eyes, figuring that considering the two of you were practically intertwined like a pretzel that it would be okay for him to gaze at you again.

“You know that skin-to-skin contact promotes the release of oxytocin…. It… uh… it can help to make you feel calm and comfortable,” He says softly.

“Oxytocin…” You mumble the word under your breath as you try to remember what the hormone is, “…the love hormone..?”

Spencer’s voice turns to a whisper as he responds. “That’s correct. A lot of people refer to it as the ‘love hormone’ because it is released at high levels when people engage in romantic activities or are falling in love.”

“It is also responsible for the feeling of trust and comfort,” His hand on your leg begins to draw small circles against your skin, barely feathering over you to the point where you can hardly feel it.

“Would you believe me if I told you that we were producing this hormone right now?”

You sigh softly against his neck at the ghost of his fingers against your leg, only half listening to what he’s saying as you try to focus on the feeling, and Spencer responds with one of his own as he feels the warmth of your breath against his skin, leaving small goosebumps in it’s wake.

Spencer’s fingers slowly widen their ascent up and down the side of your leg, brushing along your thigh as his fingertips gently skim your skin.

“Comforting, isn’t it?” His voice is low and gentle as he feels just how comforting your presence is, slightly shocked by how excited he feels when being this close to you.

“Yeah…” You muster up as much of nod under his chin as you can, giving his torso a slight squeeze from where your hand is around it.

Spencer smiles at your gentle squeeze of his torso, noting how light it is as you barely manage to add any pressure at all.

“Do you know that physical touch also triggers a person’s serotonin and dopamine production?” He asks you softly.

As if to test his fact himself, he moves his thumb up and down your thigh with a little more pressure, his fingertips leaving behind a trail of almost unnoticeable goosebumps.

“Yeah… Yeah I knew that…”

Spencer smiles softly at your confirmation. “Then you know the feeling they’re giving you right now?”

You give him another small nod as he pulls you a little closer to him, stroking his fingers a little higher up your thigh. His arm underneath your side shifts to your mid back and starts to gently massage at the tense muscles formed over your last few days bent over a desk to work on the case’s profile.

The slow pressure elicits a soft groan from your lips, a pleasant release from all of the tension you’d been carrying over the last few days, slowly dissipating as his fingers worked their magic over your t-shirt.

Spencer can feel you starting to relax into his body as his fingers work against your skin, and his breath threatens to catch in his throat as your hand moves from resting around his torso to up over his shoulder, fingers curling closed against the fabric of his t-shirt.

Spencer leans his nose against the crown of your head, the trace scent of lavender entering his nose as he took a slow breath in, most likely a trace from when you’d last washed your hair.

By this point, the two of you were very aware that the position you were in was anything but platonic, his hand tracing patterns into your thigh, your head pressed into the crook of his neck, and your hand slowly tracing over the curve of his shoulder to take it’s place cupping his cheek, your thumb pressed against the front of his ear with the rest of your fingers splayed in the soft curls gracing the side of his head.

“I’ve run out of facts…” Spencer laughs nervously at his confession, breaking the small silence between you.

“you’ve run out of facts…?” You force your eyes to blink open again as you repeat his statement as a question, pulling your head out of it’s position under his chin to look up at him curiously as you arbitrarily trace your thumb over his jaw. It wasn’t at all like Spencer to just not have anything to say.

Spencer’s face turns a dark shade of red when he hears your question, made much worse at the feeling of your thumb on his jaw, the feeling sends a shiver down his spine. “I- Yeah….” He says quietly.

Suddenly a thought passes through his brain.

“I… actually…. I do have one more fact…” his voice turns to a whisper as he speaks, a tinge of nervousness still lingering in his tone.

“Hmm?” Your expression brightens a little, and he catches the small glisten in your eyes as the dim light from the lamp reflects off of your irises.

There’s a short pause.

Spencer then clears his throat before speaking.

“...Do you know that right now... at this very moment... I want to kiss you…?”

He remains facing away, his hands trembling ever so slightly against your skin as he mutters out his confession, trailing off at the end to the point where if you were any further away from him you wouldn’t have heard it.

“...Is that okay…?” His voice was barely a whisper, scared that if he were to speak too loudly he’d scare you off and you’d never want to speak to him again.

“You want to… kiss me..?” His confession spurred you further awake, no longer struggling to keep your eyes open as you scanned his expression, your hand halting its movement against his jaw.

The sight of you gazing up at him makes his heart skip a beat and causes butterflies to flutter in his stomach. Spencer then looks down at the space between your noses, and speaks nervously.

“…I- Yes, I want… to kiss you…” His eyes quickly dart over to your lips and back again as he waits for any signal of acknowledgement or refusal.

“Will it help us fall asleep?” The question leaves your mouth instinctively as a way to try an alleviate the mild awkwardness between the two of you, and you internally berate yourself for not taking the situation seriously.

Spencer laughs a small, nervous laugh when you ask if it would help you both fall asleep, moving his hands back over to your thigh and gently brushing his fingertips against it.

Spencer then looks down at your lips again as he speaks. “No, I don’t think so…” He says, his tone once again turning to a whisper. “…if anything it might actually wake us both up further…”

“Just say it will so I can kiss you-“ Spencer remains silent for a moment, face frozen in shock. He then lets out a nervous sigh as he looks down at your lips again.

“…It- Yeah- Yeah it’ll help us fall asleep…” he whispers, his voice barely audible, and he gives you a nod that’s a little too eager.

“Then there’s no harm in trying right?” Your hand cups the side of his face, gently encouraging it down towards yours so you can finally place a kiss on those perfect pink lips of his.

“Yeah…” He slowly leans forward towards you, taking in your faint scent, the warmth coming from your breath, the softness and moisture of your lips.

Spencer’s lips slowly press against yours, just barely ghosting them with the tiniest bit of pressure. He then slowly pulls back, his eyes darting all over your face before again settling on the stain in the corner of the wall. It was just so interesting.

You take his chin in your hand gently to turn his face back towards your own, your thumb gently tracing the line under his bottom lip as your eyes scan his cheeks, pouring over the extremely faint spotted freckles over his cheeks. You’d never noticed them before. But then again you’d never been close enough to.

“I’m not quite sure it worked… Maybe we should try again…” You watch as Spencer’s face erupts into a beautiful pink flush, a soft breath resembling a laugh leaving his mouth. “Yeah, we can try again-”

Spencer nods as he speaks cutting his own sentence short as he leans down to kiss you again, adding a little more pressure this time as he seemingly grows in confidence. The kiss remains chaste and short, and as he pulls away for the second time his eyes remain fixed on you, smiling alongside his mouth.

“Is it working now?” He laughs softly as he speaks, eyelashes gently fluttering as he places a kiss on the bridge of your nose, his fingers slowly sliding into your hair at your temples.

“I’m not sure yet…” You respond with a kiss of your own placed against the curve of his chin. “Maybe we should keep going…” You place another kiss right in the corner of his mouth, and Spencer sighs softly as it misses his lips by a hair. “For research purposes…”

He smiles lightly when you mention it being for ‘research’, and his voice grows even quieter as he speaks.

“Yeah… research purposes…”

#criminal minds #spencer reid #spencer reid x reader #mgg #criminal minds x reader #spencer reid fluff #criminal minds fluff

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