This Is So Him - Blog Posts

Spencer and reader get stuck in the cold weather while on a case, and after Spencer rambles about body heat being a good source of warmth (or a similar fact); reader suggests testing that theory

oh i really liked this ask 😭 i always love writing for things i havent before! i actually thought id already posted this but i found it in my drafts

cw; 18+ mdni!! needy!spencer, softdom!spence if you squint, sexy science puns, lots of heavy petting, dry humping, fingering

The cold was unforgiving. It bit through every layer of clothing, sinking into your bones with a chill that felt almost personal. You wrapped your arms around yourself, blowing into your hands as you glanced at the snow-covered road stretching endlessly ahead. The SUV sat uselessly on the shoulder, engine dead, and the faint crackle of your radio confirmed that the rest of the team was still hours away.

Spencer stood a few feet away, pacing in a tight circle to keep his blood moving. His long coat whipped slightly in the wind, and his hair, unkempt from hours in the field, fell into his face. He pushed it back absently, his gloved fingers trembling slightly from the cold. His breath puffed in front of him like small, fleeting clouds.

“We’re going to freeze out here,” you muttered, your teeth chattering as you hugged yourself tighter.

Spencer paused mid-step and looked at you, his brows knitting together in concern. “Not necessarily,” he began, his voice wavering slightly from the chill but still steady enough to deliver one of his signature facts. “The human body has remarkable thermoregulatory mechanisms. For instance, shivering is a natural response designed to generate heat through muscle activity.”

You raised an eyebrow, your lips quirking despite the cold. “Not sure shivering is going to cut it, Reid.”

He blinked, his face taking on that familiar, earnest expression as he shifted gears. “Well, there is another method that’s proven to be highly effective in conserving warmth. Sharing body heat—specifically, skin-to-skin contact—can significantly reduce the risk of hypothermia. It’s a technique commonly used in survival situations.”

You stared at him for a beat, then let out a short laugh that fogged the air between you. “Skin-to-skin, huh?”

His eyes widened slightly, and he stumbled over his words, his hands flailing in a nervous gesture. “I-I didn’t mean it like that—I mean, not like that—just, you know, from a purely biological standpoint. It’s logical.”

You couldn’t help the grin tugging at your lips, despite the fact that your face was half-frozen. “Relax, Spencer. I’m not accusing you of anything. You’ve got a good point.”

His head tilted slightly, his mouth opening and closing as if he were trying to decide whether or not you were teasing him.

“I’m serious,” you said, stepping closer and gesturing toward the SUV. “Let’s test that theory. Unless you’ve got another way to keep us from turning into popsicles out here?”

He froze for a second, his cheeks turning pink—not just from the cold, you noted. “Oh. Uh… okay. Yes. That—that makes sense.”

You led the way back into the SUV, grateful for even the limited shelter it provided. Spencer followed, his movements stiff and hesitant as if he wasn’t entirely sure he was allowed to be there. You shrugged off your heavy coat, setting it aside, and gestured for him to do the same.

He hesitated, his hands hovering near the buttons of his coat. “You’re sure about this?”

You rolled your eyes, though your tone was light. “Unless you want to freeze out there alone, yes, I’m sure.”

Spencer nodded quickly, shedding his coat and draping it over the seat. His movements were deliberate, precise, as though he were calculating every step.

“You know, this is purely for survival,” you teased as you slid onto the backseat.

“Of course,” he replied, his voice a touch too high-pitched to be convincing.

Settling beside him, you turned to face him fully. “So, how does this work, Doctor?”

“Well,” he began, his tone shifting into that of a lecture despite the awkwardness in his posture, “the idea is to maximize surface area contact to facilitate heat transfer. The skin is an effective medium for conduction, and by—”

“Spencer,” you interrupted, unable to keep the amusement out of your voice. “Just hold me.”

His lips parted in a silent “oh,” and he nodded, his cheeks darkening further as he opened his arms. Tentatively, you leaned into him, resting your head against his chest. His body was lean and sharp beneath the layers, and his arms wrapped around you with a hesitance that made your heart squeeze.

“Warmer already,” you murmured, closing your eyes as you pressed closer.

He let out a nervous laugh, his breath brushing the top of your head. “That’s… good. It means the method is working.”

For a while, the two of you sat in silence, save for the faint sound of his breathing and the occasional rustle of clothing. Gradually, his grip on you became more secure, his hands resting lightly on your back. You could feel the thrum of his heartbeat beneath your cheek—quick and irregular, as though he were nervous.

“You’re like a walking space heater,” you teased softly, breaking the quiet.

“That’s not entirely accurate,” he replied, his voice carrying a hint of his usual matter-of-fact tone. “The human body only generates a limited amount of heat—around 100 watts at rest, give or take. It’s not comparable to a—”

“Spencer,” you said again, a laugh bubbling up despite yourself. “I was joking.”

“Oh. Right. Sorry.” He cleared his throat, and you could practically feel the embarrassment radiating off him.

You tilted your head to look up at him, finding his gaze already on you. His brown eyes were wide, soft, and filled with something that made your stomach flip—curiosity, vulnerability, and a hint of awe.

“It’s okay. I like when you ramble. Especially when you get all excited about sciencey stuff.” Your voice was soft, meant to soothe, and you tilted your head to meet his gaze. The small smile you offered was an invitation, a reassurance that he hadn’t overstepped. “In fact, it’s one of my favorite things about you.”

The effect of your words was immediate. Spencer blinked rapidly, his expressive brown eyes widening as if he couldn’t quite believe what he’d just heard. His eyebrows shot up, almost vanishing beneath the tousled strands of his hair. He opened his mouth as if to speak but hesitated, his Adam’s apple bobbing with a hard swallow.

“Oh,” he finally managed, his voice unsteady. “I, uh... thanks.”

You could see the flicker of uncertainty in his gaze, the way his eyes darted to the side, searching for an anchor in a moment that felt too big for him. Your heart ached at his reaction, and without thinking, you raised a hand to rest your palm gently on his chest. The warmth of him seeped into your skin, and you felt the rapid thud of his heartbeat beneath your touch.

The muscles beneath your hand tensed slightly, a reflexive reaction, but he didn’t pull away. Instead, he stood frozen, his eyes fixed on yours, his vulnerability laid bare in the way he held his breath. You let your fingers drift upward, brushing over the edge of his collarbone and the sensitive skin at the base of his neck. The movement was slow, deliberate, meant to ground him.

Spencer’s breath hitched audibly, a faint gasp escaping his parted lips. His wide eyes flickered back to meet yours, and for a moment, it felt like the world had shrunk to just the two of you, the snowy storm outside fading into insignificance.

“Y/n?” His voice was barely a whisper, your name fragile and questioning on his tongue.

You didn’t answer with words. Instead, you leaned in, closing the small distance between you to press a gentle kiss to the corner of his mouth. The sound he made in response—a soft, involuntary whimper—sent a ripple of warmth through your chest. His lips parted slightly against yours, his breath mingling with your own, and you could feel the way his body trembled ever so slightly under your touch.

The kiss deepened by degrees, slow and exploratory, as if neither of you wanted to rush the moment. His hand came up tentatively to cup your cheek, the pad of his thumb brushing lightly over your skin. There was a sweetness to his touch, a kind of reverence that made your chest tighten with affection.

When you finally broke the kiss, you stayed close, your foreheads nearly touching. Spencer’s breathing was uneven, and his eyes were dark, filled with an emotion you couldn’t quite name but felt all the same.

“I like when you ramble,” you murmured again, letting your fingers trace the line of his jaw. “It’s one of the things that makes you, you. And I love that.”

Spencer swallowed hard, his lashes fluttering as he looked down at you. “I... don’t think anyone’s ever said something like that to me before.”

“Then it’s about time someone did,” you said, your voice firm with conviction.

His lips curved into the smallest of smiles, shy and a little uncertain, but so genuine it made your heart squeeze. You leaned up to kiss him again, this time lingering a little longer, savoring the warmth of his lips against yours.

“Tell me something scientific,” you murmured, your voice muffled as you turned your face into the curve of his neck. Your lips found the soft spot beneath his ear, and you pressed a gentle kiss there, feeling the slight shiver that ran through him.

Spencer cleared his throat, his voice a little uneven as he obliged. “Humans have a remarkable capacity to generate warmth through muscle activity. For example, shivering alone can increase your metabolic rate by up to ten times.”

“That’s interesting,” you hummed against his skin, the vibration making him swallow hard. Your lips trailed lower, brushing against the tender skin of his throat before settling at the hollow where his pulse beat steadily. You kissed him there, slow and deliberate, savoring the way his breath hitched. “Do you know what else can generate warmth?”

For a moment, Spencer froze, his body stiffening slightly in your embrace. When he finally spoke, his voice was tight, and the single word seemed to catch in his throat. “Uh... friction?”

You grinned against his neck, the curve of your smile pressing into his skin. “That’s a good one.”

His exhale came out in a shaky mix of a laugh and a gasp, his nerves and amusement intertwining. “You- you think so?”

Shifting beneath him, you arched your back just enough to press your hips against him, and the reaction was immediate. Spencer groaned softly, the sound vibrating against your chest as you undulated again, slow and deliberate. “I really do,” you clarified, your tone teasing as you moved against him.

Spencer dropped his forehead to your shoulder, letting out a low chuckle tinged with exasperation. “God, Y/n. You’re ridiculous.”

“Hey, I learned from the best,” you shot back, your grin widening as you tightened your grip around him. The warmth of his body against yours was intoxicating, every slight movement feeding the growing tension between you.

He lifted his head, his expression softer now, his gaze locking onto yours. Without hesitation, he kissed you, his lips tentative but sweet as they met yours. “And I learned from you,” he murmured against your mouth, the words carrying a weight that made your chest ache. “Everything.”

His kiss deepened as he spoke, his tongue slipping past your lips to meet your own in a slow, intoxicating dance. “Everything,” he repeated, his voice husky as he pulled back just enough for you to feel the warmth of his breath against your lips. “Including this.”

Spencer rolled his hips against you, the hard length of him dragging against your center with a pressure that made your toes curl. The friction was maddening, delicious, and you gasped into his mouth, your hands clutching at his back as you arched against him.

“I don’t want to mess this up,” Spencer whispered, the confession raw and unguarded. Despite his words, he didn’t stop moving, his rhythm steady and almost instinctual. “I just—fuck, I’ve wanted this for so long.”

The vulnerability in his voice tugged at your heart, the mix of lust and affection swelling in your chest until it felt like you might burst. “You could never mess this up,” you said, your voice trembling slightly as your fingers traced the lines of his spine. “Spencer, I—”

The words faltered on your tongue, the depth of your feelings too overwhelming to articulate. How could you possibly express how much you cared for him, how long you’d admired him, how deeply you craved this closeness? The enormity of it all made your throat tighten, the emotions too big and too raw to put into words.

So instead, you kissed him. You poured everything you couldn’t say into the press of your lips against his, hoping he would feel the depth of your emotions in the way your hands held him, in the way your body pressed against his, in the way your heart beat wildly in sync with his own.

Spencer's fingers slipped beneath the hem of your shirt, his palm tentative but burning hot against your side. His touch was so light it sent a shiver skittering down your spine, and your breath caught in your throat as he hesitated. “Can I...?”

“Spencer.” You reached down to capture his hand, guiding it higher and pressing it firmly against the flat of your stomach. “You don’t have to ask.”

He exhaled shakily, leaning in to kiss you again. This time, there was a hunger in his kiss that hadn’t been there before, an urgency that made your pulse race. His other hand found its way to your chest, and he palmed you through your bra, his movements still cautious but full of intent. “I want to be good at this,” he murmured, his voice low and raw against your lips.

You arched your hips into his, the movement slow and deliberate, eliciting a sharp gasp from him when his cock dragged against your clit. “You already are,” you whispered, your words a mix of reassurance and pure honesty.

He pulled back slightly, his lips parting as he searched your face. His gaze was soft but piercing, filled with a vulnerability that made your chest ache. “Really?” he asked, his voice barely more than a whisper.

“Yeah.” You swallowed hard, your throat tightening with the weight of your emotions. “You’re perfect.”

The corners of his mouth lifted into a small, almost bashful smile, his face softening at your words. His gaze drifted downward, his lashes dark against his skin as he took in the sight of your bodies pressed together. “You are, too,” he murmured, the sincerity in his voice making your heart stutter.

Without warning, Spencer pushed himself up, his hands bracketing your hips as he knelt between your legs. His fingers fumbled at his belt, his brow furrowing in concentration as he worked to undo it. After a moment of struggling, he gave up with a quiet huff, opting instead to slide a hand into his jeans. When he began stroking himself, his lips parted on a soft, unbidden moan, and your stomach clenched at the sight.

The way his hand moved, slow and deliberate, combined with the way his jaw tightened and his breath came in ragged gasps—it was intoxicating. You couldn’t tear your eyes away, your mouth watering as you imagined replacing his hand with your own, with your mouth. You wanted to feel him, taste him, make him lose himself in you.

“Spencer—” you breathed, the single word thick with want.

But before you could finish your thought, he was shifting back down, his body settling against yours as his lips found your neck. “I want you to get off on me,” he whispered, his voice rough and urgent against your skin. His mouth trailed along your jawline, the light scrape of his teeth sending sparks of heat through you. “Is that okay?”

“Fuck, yes,” you gasped, your hands finding purchase on his hips. You dragged him closer, your fingers digging into the firm muscle of his ass to pull him against you.

The friction was delicious, the slow roll of his hips against yours making your head spin. The heat of him, the weight of him, the low, breathy sounds he made—it was almost too much and yet not enough all at once. You tilted your head back, offering him more of your neck as you ground against him, losing yourself in the rhythm of his body against yours.

Spencer gasped as your hips rocked up against his, the friction of his cock sliding over your clit drawing a soft moan from you. The two of you found a rhythm, slow and deliberate, your bodies moving in perfect sync. Each roll of his hips sent a fresh wave of heat coursing through your veins, the growing pressure between your thighs impossible to ignore. His hardness rubbed against you with each motion, his movements unpracticed yet intoxicatingly eager.

He dropped his head to your shoulder, his breath hot and erratic against your skin. His groan was low and guttural, the sound vibrating through you as his body tensed. You couldn’t help the soft whimper that escaped your lips in response, your hands sliding up his back to hold him closer.

He felt incredible like this—hot, hard, and trembling with need in your arms. You pressed a lingering kiss to his temple, feeling the dampness of his hairline as you drew back to take in his face. His cheeks were flushed, his lips parted, and his eyes... God, his eyes. They met yours, dark and stormy with a desperate hunger that made your breath catch.

“What do you want?” you asked softly, your voice steady despite the hammering of your heart.

Spencer’s gaze didn’t waver. “You,” he breathed, his tone raw and unguarded. “I want you.”

A laugh bubbled up in your chest, high-pitched and giddy with affection and desire. You cupped his cheek, your thumb brushing over the sharp angle of his cheekbone. “You’ve got me, Spencer.”

His eyes fluttered shut as you rocked your hips against him again, drawing a sharp inhale from his lips. His voice was rough with longing when he spoke, barely more than a whisper. “I know. I want—I want to...” He trailed off, his brow furrowing in frustration as he struggled to articulate his thoughts.

You leaned in, your lips grazing his forehead before trailing down to his ear. “Tell me,” you murmured, your voice soft and coaxing. “Whatever it is, Spencer. Tell me.”

He swallowed hard, his Adam’s apple bobbing against your lips as he searched for the words. His breaths were shallow and uneven, and when he finally spoke, his voice was low and ragged. “I want—fuck. I just want to make you feel good.” He exhaled sharply, his hand sliding between your bodies to cup you through your underwear. His palm pressed against your cunt, tentative but deliberate, and your breath hitched in response.

“I want to feel you come,” he continued, his words spilling out in a rush. His fingers twitched against you, his touch gentle but insistent. “Is that—can I—fuck—”

You silenced him with a kiss, your lips capturing his in a heated press that said everything words couldn’t. His hand flexed against you, and when you rocked against him, a strangled moan tore from his throat. You felt his hesitation melt away as his fingers pressed more firmly, his eagerness making up for any lack of experience.

“Yes,” you breathed against his lips, your hips moving in time with his touch. “Yes, Spencer. Please.”

The desperation in your voice seemed to spur him on, his confidence growing with every gasped moan and whispered plea that fell from your lips. His movements were clumsy but earnest, his need to please you shining through in every stroke and press of his hand. It was intoxicating, the way he gave himself to you so completely, so openly.

You buried your face in the crook of his neck, your breaths coming faster as the tension coiled tighter in your belly. “Spencer,” you gasped, your voice breaking on his name. “I’m—God, I’m so close—”

His response was immediate, his free hand sliding to your hip to hold you steady as he pressed harder, his movements matching the rhythm of your hips. “I’ve got you,” he whispered, his voice shaking with both nerves and determination. “Let go. Please, I want to feel it.”

And when you did—when the tension snapped and a wave of pleasure crashed over you—it was his name that spilled from your lips in a cry, his hands anchoring you as you trembled in his arms. Spencer held you through it, his own breaths ragged and uneven, his forehead pressing against yours as he whispered your name like a prayer.

james potter