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time present and time past

spencer tried to explain einstein’s theory of relativity once. and now, with spencer beside you in bed, you think you finally understand what he was on about. because time is relative. and if he doesn’t wake up, this moment will never end, and maybe you can slow down time itself. this work is part of the burnt norton series

pairing: spencer reid x fem!reader (second person, no y/n)

genre: angst

content: situationship core. they argue. avoidant!-ish.

word count: 3.4k

note: i have a final in 3 days and thought now would be the perfect time to write and post my first fic. yay! anyways this is inspired by an old literature text i studied, einstein's theory of relativity and what not. a line: I’ll come to you before you call—Just to prove that I don’t come to you every time you call.

time present and time past are both perhaps present in time future, and time future contained in time past. if all time is eternally present all time is unredeemable. - t.s. eliot

You've never been one for physics, the numbers, the theories, the science of it all. But that’s never stopped Spencer from launching into explanations like a rocket whenever the chance presents itself. You would nod along, a smile on your face though whatever he's saying might as well be in a foreign language.

He tried to explain Einstein’s theory of relativity once. Something about clocks, something about a kind of gravitational field.

“Think of it like this,” he started, and you could almost picture him gesturing animatedly on the other end of the line. “I’m on the jet, and I run down the aisle in five seconds. From my perspective, that’s it—five seconds, straight forward, simple.”

“Hotch would kill you,” you cut in, biting back a grin at the thought.

“Just imagine it,” Spencer laughed.

“Okay, okay.”

“So, if you time me, and I make it down the aisle in five seconds—”

“Highly unlikely, but sure.”

“Angel,” he warned, but there was no real bite in it. He waited for your giggles to subside before pressing on, “but for you, watching me from outside as the jet moves, it’s not so simple. You’d see me running, sure, but you’d also have to factor in the jet’s movement. To you, I’m covering more distance because the jet is moving too, right?”

“If you say so...”

“Just focus,” he laughed. “Now, here’s where it gets interesting. The faster the jet goes, the bigger this effect becomes. If it were moving close to the speed of light, something wild happens—time for me, inside the jet, starts to move at a slower rate compared to your time outside.”

“Ah.”

“You don’t get it.”

“No, I do. I do.”

“Okay, so explain it.”

You paused, your lips twitching with suppressed laughter. “Uh… You can run faster than a jet?”

Spencer groaned, but he was laughing too. “Time moves slower for those in the jet because space and time are connected,” he said, his voice warming with excitement. "They stretch and bend depending on speed. It’s called time dilation. The faster you move through space, the slower time moves for you relative to someone standing still."

“...I think I get it?”

“Not yet, but you will.”

He promised to explain it more when he got back. But he never did. And so you never really understood it—at least, not until now.

Not until he’s lying in your bed again, your sheets tangled around him like they’ve claimed him as their own.

Einstein says that time is relative. He says that the rate at which time passes depends on an observer's frame of reference.

The observer in this case—You.

And if one observer moves at the speed of light, time will slow down for them.

Spencer’s asleep beside you. His face is soft in the flickers of streetlight creeping through the blinds. They give you just enough visibility to watch the rise and fall of his chest and you wonder if he's dreaming. The sound of his breathing, steady, is the only thing keeping you tethered.

If you squint hard enough, there’s almost something domestic about the scene. You ignore the fact that this is the nth time you’ve done this because ignoring is easier. It’s easier to think about how he smells like his shampoo, and how his shirt is thrown haphazardly over your nightstand. A sight you missed more than you would admit. You think about reaching for it, but your hand stays where it is. You stay where you are—just watching, observing. Because Einstein said the rate at which time passes depends on the observer’s frame of reference. And if you stay still enough, maybe you can slow down time itself.

You like moments like these. The simplicity of it. You tell your friends the same thing when they ask, their voices thick with judgment, their eyes too knowing. “We don’t do anything” you insist to the room of raised eyebrows. “We’re just hanging out, you know, as friends” you say, as if saying it enough times will make it true.

“Just hanging out?” “Yup.”

“As friends?” “Yup.”

You know you’ve hit a new low when you have to pull the ‘hanging out’ card, but you take a sort of comfort in that fact. Because at least he’s not like those other guys, right? That’s your silver lining. That it’s not like that. He’s not like that. But in the quiet after, when his breathing is the only sound and you feel walls closing in you, you can't help but wonder which is worse: the thing that he is, or the thing you’re letting yourself become.

You reached out first this time. A small victory in the game you’ve been playing against yourself. There’s some semblance of control in it, you rationalize. If you’re bound to fall, tethered to this fate of always crawling back, at least let it be on your terms.

I’ll come to you before you call—Just to prove that I don’t come to you every time you call.

Come over. Made too much pasta. You texted. It’s an olive branch, a peace offering after a fight that had left you both frayed at the edges. A throw of the same old ball back to his side of the court where the game has dragged on far too long. Proof to him that you didn’t mean what you’d said, that you’re not done yet. That you’re still okay with this.

You can take it.

The fight had been about work—or at least, that’s how it started. He’d mentioned a new trainee in passing, his voice light, almost too casual, as he spooned rice out of the takeout box. “She’s new,” he said, with a shrug. “Eager, maybe too eager. Emily says she’s a bit of a people pleaser.”

She. You watched him carefully, trying to read between the lines.

“Oh?” you replied, keeping your voice as even as you could manage. Muscle memory. You’ve been here before. Just because Spencer wasn't one of those guys didn't mean you haven't had your fair share of them.

You smile as you meet his eyes asking all the right questions. Where’s she from? How’s she doing?

He glanced up at you, surprised by your interest. Light work you thought. “Somewhere out West, I think. She’s doing fine—rookie mistakes, you know. She had a bad day last week, though. Got rattled on a case. Garcia said Hotch was too hard on her.”

“Poor thing,” you murmured, “Hope she’s feeling better.”

“Garcia thought I… thought she was pretty,” he added laughing, the words tumbling out like an afterthought. Like the words don’t hold the weight that he knows it does.

Ah. There it is.

“Well, did you?” you asked, trying to keep your voice steady, casual.

“She’s… alright,” he said, his tone too high, too quick. You didn’t miss the way he swallowed hard afterward.

“You’re avoiding the question,” you teased lightly, smiling even though your stomach was beginning to twist itself into knots.

“I’m not,” he countered, shoving another bite of food into his mouth. “You asked if she’s pretty, and I said she’s alright.”

“You’re totally avoiding it,” you said, laughing to keep the air light even as the knot pulled tighter. “Spence, you can just say it.”

“Say what?” he asked, eyes darting up to meet yours, then back to his plate.

“Just say it.”

“I don’t know what you want from me.”

“Admit that she’s pretty.”

“Okay.” He exhaled sharply, like the word had been dragged out of him. “I think she’s pretty.”

Oh.

There was something in the way he said that made your chest constrict.

I think she’s pretty.

He thinks she’s pretty. Not like it was some objective fact, not something calculated or reasoned. Not that she was statistically pretty, backed up by some symmetry or math behind it. He just… thought so—No, he thinks so. Thinks. Present tense. Meaning as he’s sitting here, across from you, eating the takeout you suspected he’d purposefully ordered too much of, he thinks she’s pretty.

You stared down at your plate, your appetite long gone. The silence stretched between you, heavy and uncomfortable. You could hear the faint hum of the refrigerator, the distant murmur of voices from the apartment next door.

“You’re quiet,” he said finally, his voice softer now, hesitant.

“I’m fine,” you replied too quickly, a smile pasted on your face as you looked up. “Just thinking.”

“About?”

You shook your head, forcing a smile. “Nothing. Pass the soy sauce?” He passed it without another word, but you could feel his eyes lingering on you.

“Why are you looking at me like that?” you finally said, your voice sharper than you intended.

“I’m not,” Spencer replied defensively, though his eyes stayed trained on you. “You’re just… quiet. It’s not like you.”

“Yeah, well, maybe I’ve run out of things to say.”

“Is this because I said she’s pretty? Because I didn’t want—”

“Spencer stop,” you interrupted, setting your fork down with a deliberate clink against your plate.

“I wasn’t going to say it. You asked me to say it.” he countered. “And the term pretty is subjective anyway, I think you’re pretty too.” You stayed silent, not meeting his eyes. “Don’t be like that. You know I care about you.”

“It sure doesn’t feel like it.”

You knew you were being petty. Acting like a child who didn’t get their way, grasping at anything to make the hurt feel justified. But you couldn’t help it.

“You just—you talk about work, about—god, about pretty girls and I—”, You stopped, swallowing hard, trying to tamp down the words you weren’t ready to say. “I feel like I’m just… here. Someone you call when you’re bored or when you’ve ordered too much food or when—”

“That’s not true,” he argued, his tone sharp now, “You’re twisting it—”

“Am I?” you snapped, your eyes finally meeting his. They were wide, startled, but it didn’t stop you. “Because I’m starting to think this is exactly what it is.”

“Well, what do you think this is?” Spencer’s jaw tightened as his hands gripped the edge of the table.

“I don’t know,” you said bitterly. “Why don’t you tell me?”

“We’ve talked about this,” Spencer said, each word cutting deeper than the last. “You said you wanted to be friends. Friends do this. Friends have dinner. Friends don’t force someone to admit someone else is pretty and then make it all—I don't know, all weird after.”

You winced, his phrasing like a mirror reflecting every misstep, every conversation where you’d backed yourself into this corner. He’s not wrong—you had said you wanted to be friends. But he didn’t know the weight behind that concession.

You’d thought back to those late-night conversations. The ones where he’d laid out his reasons like a clinical diagnosis: I don’t have the time. It wouldn’t be fair to you. I’m not ready. So, you’d waited, convincing yourself that 'not now' meant 'not yet'. But eventually, you’d called it yourself, told him you should just be friends. A sad attempt at controlling a situation you were only ever destined to be hurt by. Because your own destruction should only ever be yours to wield—and you have to claim it before it can claim you.

He’d agreed it was better this way and you’d nodded along. Not because you believed it, but because it was a way to keep him in your life. A lifeline you clung to no matter how much it cut into your hands. But labels don’t erase what’s already happened. They don’t undo the stolen glances, the kisses in the quiet moments, the nights where you felt like the only two people in the world. They just build a fragile scaffold over it all, a flimsy way of holding up what’s already crumbling. Dating. On a break. Dating again. Friends. They pile on top of one another like a pathetic plaster over the hurt of what you wished things could be.

“Right,” you said finally, the word brittle and sharp as it escapes your lips. Your voice was hollow as your eyes met his, daring him to flinch. “So I guess that means I can’t expect anything from you, right? No decency, no consideration, no… nothing. Because we’re not in a relationship. We’ve never been in a relationship. Right?”

“Don’t,” Spencer said quietly, almost pleading now. “That’s not fair. Don’t turn this into something it’s not.”

“You’ve made it perfectly clear what this is,” you said, standing from the table, your hands trembling as you gathered your things.

“Wait,” he said, standing too, “You don’t have to—”

“And by the way, Spence,” you cut him off, reaching into your bag and slamming the extra key he’d given you months ago onto the table. It clattered louder than you expected, echoing in the tense silence between you. “You can have this back. Because last I checked, friends don’t have keys to each other’s apartments.” You were acutely aware of the venom dripping in your voice but you pressed on, the words spilling out before you could stop them. “And thanks for the flowers, but I don’t think friends go out of their way to buy a bouquet to make up for every friendly dinner they miss.” You didn’t wait for a response. You didn’t look at his face, didn’t want to see whatever expression he was wearing.

But the satisfaction of that slam felt distant now. You think back fondly of the girl who had made her point so clear, so definitive. A line drawn in the sand. But winds blow and sand moves. That girl seems like a lifetime away from the girl you are now—the one lying here, beside him, again.

Spencer stirs beside you, a quiet sigh escaping his lips, and your breath hitches. You don’t want him to wake up. Because if—when he does, you know he’ll leave. But until then, in this moment of temporary serenity, you can pretend it doesn’t matter. You can pretend it’s okay. You can pretend you’re okay.

After all, Einstein said that time is relative. If he doesn’t wake up, the moment will never end, and maybe—just maybe—you can slow down time itself. You stare at the ceiling, letting the minutes tick past, each one stretching longer than the last.

Your thoughts drift back to what Spencer had said. Time moves slower for those in the jet.

Well, if your apartment is the sky, then this bed is the jet. In the quiet of this moment, his warmth beside you, the faint smell of him lingering on the pillow—this is where time bends. The rate at which time passes depends on the observer’s frame of reference. Maybe you can trick the universe, make these seconds stretch into hours. Maybe, if you stay still enough, think hard enough, the world outside won’t come knocking. You can freeze this bubble of peace.

But the illusion is tenuous, and reality looms like turbulence on the horizon. Time doesn’t truly stop, you know that, we’re all forced to move on along with it. They say time waits for no man—least of all a broken-hearted girl. The clock keeps ticking, indifferent to your longing. Sooner or later, he’ll wake, and the bubble will burst.

You wonder how long you can keep this up. You’d just been talking earlier tonight, telling each other what had happened in the days you hadn’t spoken since the argument. The words had come easier than you expected, though none of them seemed to solve anything. Spencer had fallen asleep mid-sentence, right as you were recounting something trivial about your day. His exhaustion was written all over his face—the heavy pull of his eyelids, the way his head tilted slightly toward you before finally giving in. You’d paused, watching him, and the words you were about to say dissolved into silence. You hadn’t wanted to wake him.

The old you would’ve been angry, the frustration bubbling up into sharp words and accusations. The fight was always the same, well-rehearsed and raw: You always do this. I’m sorry. When are you not? I missed you. Then why won’t you stay? You know I can’t. You can. I can’t. It was less of a conversation and more of a script. It had long since stopped being about what either of you said; it was about how you said it and where it always led. It would’ve ended in a fight, Spencer’s guilt countered by your hurt, spiralling into a familiar standoff with no real resolution.

But that was the old you. She’d had more fight in her, more fire to demand the things she felt she deserved. That fire has dimmed now, not extinguished, but banked low and steady, like you’ve learned to ration it. It’s not that the frustration has disappeared—it lingers, an ache beneath the surface—but you’ve stopped letting it boil over. Deep down, you know the real reason you didn’t start a fight tonight. It’s not just that you’re tired of fighting, though you are. It’s that you don’t know how much fight he still has in him. You don’t know if one more argument, one more crack in this fragile thing between you, will be the thing that makes him walk away for good.

And you’re not ready to find out.

So you let it slide. Not because you want to, but because you can. You’ve told yourself you’re strong enough to carry it—to make up the weight of his distance, his exhaustion, his inability to give you what you need. You let him sleep, listening to the steady rhythm of his breathing, and you tell yourself it’s enough.

But Spencer shifts again, and this time his eyes flutter open. You freeze, your body tense, as if staying perfectly still might undo his wakefulness.

“Hey,” he murmurs groggily, his voice thick with sleep. His arm snakes over your waist, pulling you closer. For a brief, fleeting second, you allow yourself to relish the warmth of his touch, the illusion of intimacy.

Then his hand moves. He’s reaching—not for you, but for his watch on the bedside table.

He checks the time, squinting in the dim light filtering through the blinds. And you know. You know what’s coming next.

“I should go.” he says softly, his arm already retreating from where it had rested over your waist. He pushes himself up, running a hand through his sleep-mussed hair.

You sit up slightly, the sheets pooling around you, and force a small smile. “Okay” you murmur, the words feeling hollow even as they leave your lips.

Spencer’s already out of bed, reaching for his shirt and bag. The routine feels mechanical, practiced—a series of motions he’s repeated so many times it barely registers as something that could hurt you. He pulls the shirt over his head, adjusts the strap on his bag, and leans down to kiss your forehead. Friends, as if. You think.

It’s a fleeting gesture, a touch that’s supposed to mean something but feels more like a formality now. More perfunctory than tender.

“I’m sorry I fell asleep,” he says as he straightens, glancing at his watch like he’s late for something more important. “You should’ve woken me up.”

You shake your head silently, not trusting that your thoughts won’t betray you. Don’t wake up. Don’t leave me. Don’t go. Instead you settle for, “You were tired. You should get some rest.” The weight in your chest feels unbearable but you press your lips into a tight, strained smile anyways. A silent permission for him to leave.

He doesn’t hesitate.

“Drive safe,” you say quietly as you walk him to the door.

“I’ll text you?” he offers, already halfway out.

“Okay,” you reply, the word barely audible.

And then he’s gone.

The sound of the door clicking shut echoes in the quiet of your apartment, final and unrelenting. You stand there for a moment, staring at the door as if willing it to open again, as if hoping he might turn around and come back. You know he won’t.

You turn and lean against the wall, the cool surface grounding you, a poor substitute for the warmth that was just beside you. The apartment feels colder, emptier now, the silence deafening. The clock on the wall ticks forward, oblivious to your grief, dragging you further away from the moment he was just here. You feel stuck in place, a reluctant passenger watching the world rush forward while you’re left behind, stranded.

You think back to what Einstein had said and you think he’s got it all wrong. How if one observer moves at the speed of light, time will slow down for them. Because no matter how tightly you try to hold on, the jet doesn’t slow down. It won’t wait for you. The jet will keep moving forward, unrelenting, and him along with it. With or without you.

And as you stand alone in the stillness he’s left behind, you realize it’s always been without you.

⋆✴︎˚｡⋆ hi if you're here! thank you for reading! feel free to like or reblog or comment or reply!

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