Welcome to Wonderland

So Rossi throws a barbecue pool party at his place. A calculated intervention, he calls it, claiming the combination of grilled meat and chlorine will force everyone to relax. Spencer opens his mouth to cite the statistical probability of pool-related injuries—drowning, spinal damage from shallow dives, the microbial realities of shared water, to say nothing of the carcinogenic properties of charred flesh—but Rossi gives him the look. The one that says I’ve buried people, kid, and I’m not above making it a round number. Spencer decides his argument isn’t worth his life.

Besides, Rossi's backyard turns out to be unfairly pleasant. There's a sprawling patio, string lights that aren't yet on, and a pool so absurdly blue it looks photoshopped. Morgan's already doing laps—poorly, if the splashing is any indication. Prentiss is nursing a drink that's mostly rum and questionable life choices, leaning back in a lounge chair like she's posing for a magazine called Profiler Chic. And JJ, for the first time all week, laughs loud enough to startle a bird out of a nearby tree.

Spencer tells himself he's relaxing. He's standing in the shade, drink in hand, doing a credible impression of a normal person who definitely does not have three separate anxiety spirals running on parallel tracks in his brain at all times.

Then he sees you.

As soon as his eyes land on you, his brain short-circuits.

Not metaphorically. He's fairly certain he can feel the actual neural pathways misfiring, synapses fizzling out like faulty wires in a rainstorm. The prefrontal cortex—responsible for rational thought, decision-making, impulse control—appears to have vacated the premises entirely. What's left is just… static. And you.

You're sitting on the edge of the pool, feet in the water, talking to Garcia about something that makes you smile in that particular way—the one where your nose scrunches up just slightly, like you're trying not to laugh and losing the battle. You're wearing something simple. It shouldn't matter what. It shouldn't make his chest feel like someone's cracked a glow stick inside it.

But it does.

He's harboured deep-seated feelings for you for a while now—months, maybe longer, though he's refused to pin down an exact date because that would make it real. Real means accountable. Real means he can't rationalize it away. Real means he has to do something about it, and doing something about it carries a statistical probability of rejection, awkwardness, and the slow, agonizing collapse of one of the few genuinely good things in his life.

So mostly, he's been shoving the feelings down. Attributing them to all the forced proximity: the cramped jet rides, the late-night stakeouts where you fell asleep against his shoulder and he spent three hours not breathing, the way your arm always seems to brush his in the bullpen even though there's plenty of room. Circumstantial, he's told himself. A byproduct of the job. Proximity-induced familiarity. He's even cited the mere-exposure effect to himself more than once, along with misattribution of arousal and, on one particularly desperate night, the possibility of a previously undiagnosed temporal lobe issue.

He's named every psychological phenomenon he can think of, as if labelling the symptoms would cure the disease.

(Spoiler: it hasn't. Naming a tornado doesn't stop it from touching down.)

And you're wearing a sundress.

It's not even an especially elaborate one—something light-coloured, sleeveless, the kind of dress that probably took you thirty seconds to choose. The kind he's seen a hundred strangers wear on the subway without a second glance. On you, it's catastrophic.

The fabric catches the breeze, shifts against your legs like it's trying to learn the shape of you. The afternoon sun turns the edges of you gold—your collarbones, the bend of your elbow, a sliver of your shoulder blade when you turn to say something to Prentiss. He watches your mouth form the words and doesn't hear a single one. There's a physics equation for light refraction, he knows, something about how the angle of incidence changes the way the eye perceives colour and shadow. He's never understood it less than he does right now, because whatever is happening with the light on your skin shouldn't be possible. You're glowing. You're actually glowing, and no one else seems to notice, and he feels like he's the only person in the world who can see a frequency of light that doesn't technically exist.

Even if he could look away—which he probably should, soon, because if he's managed to misdirect the team up until now—deflecting with statistics, burying himself in case files, pretending the way you say his name doesn't linger in his chest like a match that won't go out—this would definitely give it away. This is not the behaviour of a colleague. This is the behaviour of a man who has been professionally compromised by a sundress and a breeze and the unforgivable angle of a shoulder blade.

Morgan is already watching him with that infuriating half-smile, the one that says I've been waiting for this and I'm going to make it everyone's problem. Rossi's eyebrows have achieved a level of elevation that bodes poorly. Prentiss has stopped mid-sentence, her eyes flicking between Spencer and you with the sharp, unholy glee of someone who just found the final piece of a puzzle she'd been assembling for months.

Some distant, analytical part of his brain clocks the exact angle of his head (fifteen degrees left of centre—optimal for gazing, apparently, not that he was trying to optimize anything), the prolonged lack of blinking (eleven seconds and counting—make that fourteen, now seventeen, his corneas are going to stage a protest), the way his mouth has gone slightly slack. Pathetic, that part supplies helpfully. Textbook parasympathetic arousal. You look like a fish. A very intelligent fish currently failing to process basic visual stimuli.

He blinks. Finally. It sounds louder than it should, like a shutter clicking in a quiet room.

It's stupid, he knows that. Superficial. He's read enough neuroscience to understand that attraction based on appearance alone is just a cocktail of dopamine, norepinephrine, and serotonin flooding the ventral tegmental area. It's not profound. It's not meaningful. It's just chemistry—a few milligrams of neurotransmitters briefly overriding his prefrontal cortex, hijacking his orbital frontal cortex, and rendering his anterior cingulate cortex essentially useless for the duration of whatever this is.

He's published papers. He's given lectures on cognitive bias. He's explained, in detail and with visual aids, how the brain's reward system can be tricked by novelty and scarcity and the mere expectation of pleasure. He's stood in front of rooms full of people and told them, with complete confidence, that human attraction is predictable, quantifiable, and ultimately manageable if you understand the underlying mechanisms.

And yet here he stands. Undone by a sundress and some afternoon light. Undone by the way you tilted your head three seconds ago. Undone by nothing more than fabric and physics and the cruel, random accident of you existing in his line of sight.

Because apparently all that education was doing absolutely nothing to prepare him for you.

That's the part he can't lecture his way out of. The chemistry argument falls apart when he considers that he's seen beautiful people before—hundreds of them, thousands, statistically inevitable in a city of eight million. He's never felt like this. He's never stood frozen while his brain helpfully listed every single way he was failing to function like an adult human being. He's never had to consciously remind himself to blink.

So maybe it's not the dress. Maybe it's not the light. Maybe it's the fact that it's you—you, who remembered his coffee order after two weeks. You, who stays late to help him reorganize the filing system even though you have no reason to. You, who laughed at his statistics joke about airplane bathroom air quality when no one else was listening.

The dress is just... a catalyst. A very effective one. A weapon-grade one, frankly, and he's considering writing a strongly worded letter to whoever designed it.

He's only ever really seen you in workwear—knee-length skirts and dress pants, everything tailored to say competent and don't look too long. Blouses in muted colours, sleeves rolled with precision, heels that click against the bullpen floor like a metronome keeping time. He's spent countless hours in your proximity, close enough to notice the way you press your lips together when you're reading a difficult file, the way you tap your pen twice before writing anything down.

On nights out with the team, something a little less formal: dark jeans, a fitted top, maybe your work makeup swapped for something smokier. He's catalogued those nights with scientific detachment (or so he's told himself), noting the shift in palette, the way you soften around the edges when the case files are closed.

But this?

This is something else entirely.

This is you barefoot on Rossi's patio, a half-empty lemonade in your hand, the condensation dripping slow down the glass and onto your fingers. This is you barefoot—barefoot—your toes curling against the warm stone like you're testing the temperature, like you have nowhere to be and no one to impress. This is the thin straps of that dress slipping a millimetre down your shoulder every few minutes, and you don't fix them, not right away, because apparently you have no idea what you're doing to him.

How could you? He's barely sure he knows.

This is you laughing at something Prentiss said, head tipped back, throat exposed in a way that makes Spencer think about pressure points and vulnerability and absolutely none of the professional terminology he's reaching for. The carotid artery runs through that part of the neck, he knows that. He knows the name of every major blood vessel, every nerve cluster, every muscle group involved in the simple act of tilting your head back to laugh at a friend's joke. He's spent years memorizing the human body's vulnerabilities—for work, for profiling, for understanding how far someone can be pushed before they break.

He's never once thought about any of it like this.

He's never watched the pulse point at someone's throat and wondered if his own heartbeat would feel the same way against their skin.

He should say something. Anything. The statistical probability that silence will be interpreted as normal behaviour is currently hovering around zero—negative, if that were mathematically possible, which it isn't, but he's making an exception because this feels like it should break at least a few rules of probability theory.

But his mouth seems to have forgotten how language works.

Not forgotten, exactly. That's inaccurate. The words are still there, somewhere, buried under approximately fourteen layers of you're wearing a sundress and your hair is down and you just laughed in a way that made the afternoon light rearrange itself around you. Retrieval failure, technically. The information is stored but inaccessible, like a book in a library that's currently on fire. He could recite the Fibonacci sequence to the hundredth digit right now without breaking a sweat. He could explain the entire behavioural analysis unit's case allocation algorithm. He could list every prime number between one and a thousand if someone asked.

But hello? How are you? That's a nice dress, statistically speaking, you look like the kind of weather event they name?

None of those are coming.

So he stands there. Silent. Holding a lemonade that's mostly melted now, condensation dripping between his fingers, doing an absolutely stellar impression of a man who has never spoken a single word in his entire life.

You've got your hair different, too. Loose over one shoulder, curling slightly at the ends from humidity or product or maybe just genetics—he doesn't know, and the not-knowing irritates him, because he usually would know. He'd have catalogued the exact texture, cross-referenced it with hair types in forensic anthropology, filed it away under neutral observations. He once spent forty-five minutes explaining the difference between cuticle scales to Garcia. He wants to do that again, right now, if only to have something to do with his hands that isn't gripping his glass like it's the only thing tethering him to earth.

The glass is sweating. So is he. He's not sure which one is more embarrassing.

And your thighs—

His thoughts are anything but neutral. They're not even adjacent to neutral. Neutral has left the building, taken a cab, and is probably halfway to Quantico by now. Neutral is sending him a postcard that just says get it together. Neutral has changed its phone number and moved to a different state specifically to avoid him.

Your thighs just look so damn soft.

He realizes, distantly, that "soft" is a strange adjective for body tissue. It's not clinical. Not precise. There's no metric for softness in any forensic anthropology textbook he's ever read. No standardized scale. No peer-reviewed rubric. He could say subcutaneous adipose tissue. He could estimate the density or the likely elasticity, could calculate the approximate surface area and compare it to normative anthropometric data, could probably produce a passable diagram from memory if someone handed him a piece of paper and forty-five seconds.

He could, in theory, write a short paper on the visual perception of skin elasticity and its correlation to—

No.

No.

He's not doing that.

He's not doing that because that's not what his brain keeps supplying. The words arriving in his head, unbidden and increasingly frantic, are nothing like the ones he was taught to use in lecture halls and academic journals. They're smaller. Dumber. They arrive without citations or footnotes or any of the careful scaffolding he normally uses to distance himself from messy, subjective, human reactions.

Soft.

Plushy.

Warm.

These are the words of someone who has lost all professional detachment. These are the words of someone who looked at a colleague's thighs and forgot, for approximately three full seconds, that he has an IQ of 187 and three PhDs and a reputation for being the smartest person in almost any room he enters.

And then—

Sexy.

That one arrives like a train he forgot he was standing on the tracks for. One moment, nothing. The next: impact. Full-force. No time to brace.

He nearly chokes on his own tongue.

Sexy.

His brain actually used the word sexy.

Spencer Reid, who once defined the term for Morgan as "a culturally contingent construct tied to reproductive fitness cues, heavily influenced by evolutionary biology and sociocultural conditioning," has been reduced to a single, pulsing syllable of pure, unfiltered want.

No framework. No caveats. No qualifying statements about how attraction is subjective and context-dependent and shouldn't be conflated with long-term compatibility metrics.

He takes a breath. It doesn't help.

He takes another. Also unhelpful.

He forces himself to look at the pool instead. The water is chlorinated. The pH balance is likely between 7.2 and 7.8—standard for residential pools, though Rossi probably pays someone to maintain it at the optimal 7.4. There are approximately 18,000 gallons of water in Rossi's pool, give or take based on depth variation. He could calculate the exact volume if he had a measuring tape and fifteen minutes. He could write an equation. He could derive it.

These are facts. These are safe.

Facts don't wear sundresses. Facts don't laugh with their whole body, shoulders shaking, head tipping back like they've forgotten anyone is watching. Facts don't have thighs that make a man with three PhDs forget the difference between subcutaneous fat and basic human decency.

He lasts approximately four seconds before his gaze drifts back to you.

Adipose tissue, he tries desperately. Adipose. Tissue. Gluteofemoral fat distribution. Subcutaneous layer, composed primarily of—

It doesn't help.

It doesn't help because the thing is—adipose tissue doesn't look like that. Adipose tissue, in every diagram he's ever studied, is a featureless yellowish blob. It's cross-sections and medical illustrations and clinical descriptions of thermal conductivity and metabolic function. Adipose tissue has never made anyone's breath catch.

Adipose tissue doesn't make a person want to press their face into the curve of it and stay there.

Adipose tissue doesn't make a person imagine what it would feel like to rest his hand just above your knee—casual, incidental, a brush of fingertips that could mean anything or nothing—to test the give of it under his palm, to see if you'd tense or relax or maybe, possibly, lean into it.

To see if you'd let him—

He actually makes a sound. A small, strangled thing that might have been a cough or might have been his dignity leaving his body in a slow, humiliating death rattle. It's the kind of noise a person makes when their internal monologue has become a biohazard and they've just realized there's no containment protocol.

Beside him, Morgan raises an eyebrow.

That's all. Just the eyebrow. One slight lift, like a drawbridge going up over a moat that Spencer is now certain he will never be allowed to cross again.

Mercifully, Morgan says nothing.

Yet.

The yet is implied. It hangs in the air between them like a guillotine blade Spencer can hear creaking, oiled and gleaming and waiting for the perfect moment to drop. Morgan is storing this away. Morgan is taking mental notes. Morgan is going to bring this up at the worst possible time, probably in front of the entire team, probably using the word pining with absolutely no regard for Spencer's remaining shreds of self-respect.

Spencer downs the rest of his lemonade in one go. It's too tart. It burns his throat. It does absolutely nothing to cool the heat spreading up the back of his neck—a heat that has nothing to do with the weather and everything to do with the way you're now tucking a strand of hair behind your ear, exposing the delicate curve of your jaw, and he has to look back at the pool again.

Across the patio, you shift your weight onto one foot, and the hem of your dress rises maybe half an inch.

Maybe. He can't be sure. It could be less. It could be a quarter of an inch, or an eighth, or some fraction so small it should be statistically insignificant. But insignificant is not how his brain is processing this information. His brain is processing this information like a five-alarm fire, like someone pulled a lever and every single warning light in his skull started flashing at once.

The hem rises. A sliver of skin appears. Barely anything. A glimpse, a suggestion, a comma in the sentence of you.

Spencer makes the strangled sound again.

This time, Morgan definitely hears it. There's no plausible deniability. No ambient noise to blame. No sudden gust of wind or rogue insect or any of the other excuses Spencer's panicking brain is already discarding as too transparent. Morgan hears it, and Morgan looks, and Morgan's eyebrow does that thing again—the one that says I see you, I know what you're doing, and I am going to make this everyone's problem at the next team dinner.

Spencer can't bring himself to care.

He wonders what they'd feel like under his palms. Under his cheek. He wonders about the give of the tissue—the give—the way it would yield slightly to pressure, the way it would warm under his touch, the way it would feel to press his thumb there and feel the density of muscle beneath. He wonders about the temperature gradient from the cool of the shade to the warmth of the sun exposure, as if that's what he's actually calculating, as if he's not just desperately searching for a framework to contain what he's feeling.

He wonders if you'd tense or relax.

He wonders—and this one arrives so quietly, so dangerously, that it almost slips past his defences—if you'd let him.

Let him.

His own brain has just used the hypothetical permission structure of a second-person pronoun, and Spencer realizes with dawning horror that he's not imagining a scientific study anymore. There's no control group. No data set. No peer review. He's not hypothesizing about generic human responses to tactile stimuli. He's not designing an experiment he'll never run.

He's imagining you.

Looking at him.

Saying yes.

Saying his name not like a colleague—Reid, can you look at this file? Reid, wheels up in twenty. Reid, good work today—but like something softer. Something kept in the dark. Something he hasn't earned the right to hear but wants so badly he can feel it in his teeth.

He understands attraction on a theoretical level. He's read the studies: Kinsey, Masters and Johnson, the neurological imaging of desire—the way the ventral striatum lights up like a flare, the way the amygdala down-regulates fear responses in the presence of a desired stimulus. He's explained the difference between romantic love and attachment to Garcia at least four times—love is a chemical bond, Garcia, attachment is a survival mechanism, they're not the same thing—with charts. He's qualified to speak on this. He could give a lecture. He could write a monograph.

But he's never experienced the practical effect as avidly as he does now, standing frozen in Rossi's backyard, holding a bag of chips he's forgotten to set down.

Avidly. That's the word his brain supplied, and it's not wrong. There's something almost hungry about the way he can't stop looking. Not predatory—he'd die before he made you uncomfortable, before he let you see even a fraction of what's happening behind his eyes—but yearning in a way that feels too big for his chest. Too loud for his silence. Too much for the careful, compartmentalized life he's built for himself.

He doesn't care.

He can't care.

Caring would require blood flow to parts of his brain currently being rerouted to a much less academic pursuit. Caring would require him to access the prefrontal cortex—the seat of rational thought, impulse control, long-term planning—and that area has been offline since approximately 2:47 PM, which is when you walked through Rossi's gate and the sun caught your hair and Spencer forgot how to breathe.

So no. He doesn't care.

Not about Morgan's eyebrow. Not about the chips melting in his grip. Not about the fact that he's been standing in the same spot for what feels like an hour, doing nothing, saying nothing, being nothing except a witness to his own undoing.

It feels like every new detail is a small wound. Not painful, exactly—more like pressing on a bruise he didn't know he had. Each observation lands somewhere soft, somewhere unprotected, and leaves a mark. The curve of your wrist. The way you tilt your head when Emily says something surprising. The small crease between your eyebrows when you're concentrating, the one that disappears the second you laugh.

You turn.

Almost like you felt him looking.

Spencer believes in coincidence. He believes in statistical probability, in the unremarkable nature of most human interactions, in the law of large numbers and the fact that given enough opportunities, even unlikely events will eventually occur. He could give you the exact formula for the probability of two people making eye contact across a crowded patio at a specific moment in time. He could calculate it. He could defend it.

But the timing of this feels deliberate in a way that makes his stomach drop.

Not deliberate on your part—he doesn't think you're playing games. Deliberate in the way a thunderstorm feels deliberate when the sky goes dark and the air goes still and every instinct you have tells you to find shelter. This is not random. This is not noise. This is the universe, or fate, or some other concept he's spent his whole career dismissing, pulling a thread and watching him unravel.

You catch his gaze.

Across the humid air and the string lights and the carefully maintained distance he's been constructing for months—the distance he's been hiding behind, the distance he's told himself was professionalism, was respect, was protection. For you. For him. For whatever fragile thing he's been afraid to name.

You catch his gaze, and you hold it.

And when you smile—at him, just him, not the group, not the party, not the general direction of the snack table—like you're glad he's here—

The match in his chest catches again.

It never really went out, he realizes. He's been carrying this ember for weeks, for months, for however long it's been since you first said his name like it meant something. He's been smothering it with case files and rationalizations and the mere-exposure effect, burying it under statistics and denial and the firm belief that if he just understood it well enough, he could make it stop.

But matches don't care about understanding. Fire doesn't care about his PhDs.

And you're still smiling at him. Still looking. Still waiting, maybe, though he can't imagine for what.

So much for rationalizing it away.

He can't. He won't. Not anymore. Because rationalizing requires distance, and distance requires looking away, and looking away from you—with the sun in your hair and the smile on your face and that small silver ring catching the light like a signal he's only just learned how to read—is no longer something he's capable of.

His feet move before his brain catches up.

He's walking toward you.

He doesn't remember deciding to.