The Sigma Chi house smells like spilled beer and poor life choices, which is probably redundant.

I'm standing in the corner of a room that's somehow both too hot and too cold, nursing a cup of something that tastes like regret and artificial fruit flavoring, watching Marcus work the crowd like he's conducting an orchestra. He's good at it—the way he remembers people's names, asks questions that make them feel interesting, touches their shoulders or arms just long enough to create intimacy without commitment.

It's textbook charisma. Probably learned it from a father who was too busy to teach him anything else.

"You look like you're about to take notes," Marcus says, suddenly appearing beside me with two beers and that smile that has probably caused at least three breakups tonight alone.

"I am," I say, accepting one of the beers because refusing would draw more attention than accepting. "Observing the mating rituals of the privileged male in his natural habitat. Fascinating stuff. Very National Geographic."

"Is that what this is?" He leans against the wall next to me, close enough that I can smell him—that intoxicating cedar and smoke combination that makes my hindbrain suggest increasingly stupid things. "I thought we were on a date."

Right. The date. The fake date that I've been documenting in meticulous detail for the past week, complete with timestamps and physiological response notes that I absolutely cannot think about right now.

"We are," I say, keeping my voice level. "That's why I'm here instead of at home reading about attachment theory like a normal person."

"You're not a normal person, Iris." He says it like it's a compliment, which is dangerous. Compliments are just manipulation wrapped in flattery, designed to make you lower your defenses. I know this. I have three peer-reviewed studies bookmarked on my laptop about exactly this phenomenon.

My body doesn't seem to have read those studies.

"Neither are you," I say, which is true in a completely different way. Marcus isn't normal because he's never had to be. I'm not normal because I've spent the last twenty-three years building walls so thick that I'm pretty sure there's a structural engineer's report required to breach them.

He takes a sip of his beer, and I notice he's wearing cologne—the expensive kind that costs more than my textbooks. It sits on top of his natural scent like an expensive suit on an already-beautiful frame, which is an unnecessarily poetic observation that I'm going to blame on the alcohol.

"Come meet some people," he says, and his hand is on my lower back before I can construct a logical argument against it.

The touch is light, barely there, but it sends my nervous system into overdrive like he's just activated some ancient survival mechanism. My pulse quickens. My skin feels electric. This is just biology, I remind myself. Oxytocin and dopamine and the evolutionary imperative to reproduce with someone who has good genes and can probably kill things with his bare hands if necessary.

"I know people," I say, but I'm already moving with him, which is the problem. I'm supposed to be the observer here, the scientist maintaining appropriate emotional distance. Instead, I'm being herded through a crowd like I'm part of his collection, and the worst part is that some deeply buried, stupidly romantic part of me doesn't entirely hate it.

He introduces me as his girlfriend to at least four different people, and each time the word lands differently in my chest. Girlfriend. Like I'm not just a temporary data point in his endless rotation of admirers. Like I'm someone he chose to bring here, to stand next to, to touch casually like it's not sending my entire nervous system into a state of productive chaos.

"How long have you two been together?" someone named Brittany or Bethany asks, and I can see the calculation in her eyes—the reassessment of Marcus's availability.

"A few weeks," Marcus says, and his hand finds my waist again. "But it feels longer."

I want to correct him. Point out that we've known each other for approximately nineteen days and that "feels longer" is a common cognitive distortion related to intense emotional experiences and heightened neurochemical activity. Instead, I say, "He's very charming. It's probably a personality disorder."

Brittany/Bethany laughs like I've made a joke, which I sort of did, except I'm not entirely sure I was joking.

---

Sophie knows something is wrong the moment I walk into our dorm room at 11:47 PM.

She's sitting on her bed with her laptop, surrounded by approximately seventeen empty chai tea boxes and the organized chaos of someone working on a communications project. Her eyes narrow as she takes in my appearance—the fact that I'm still wearing the dress I wore to the party, that my hair has partially escaped its bun, that I smell like cedarwood and smoke and bad decisions.

"Okay," she says, closing her laptop with the deliberate slowness of someone preparing for a confrontation. "What the fuck?"

"Hello to you too," I say, moving to my side of the room and beginning the process of undressing like this is a normal Friday night and not the beginning of a conversation that will require me to lie to the one person who actually knows me.

"Don't 'hello' me." Sophie's voice has taken on that particular tone that means she's about to do the thing where she loves me so hard it becomes impossible to maintain any kind of reasonable defense. "You smell like a man. A specific man. A man who, if I'm not mistaken, is Marcus Reid."

"That's probably just cologne transfer from proximity," I say, pulling on an oversized sweater that definitely belongs to Sophie but which I'm appropriating anyway because it smells like her—like vanilla and optimism and the kind of unconditional acceptance that makes me want to simultaneously hug her and run away.

"Iris." She uses my full name, which is the auditory equivalent of a red card in soccer. "Talk to me."

I could lie. I'm good at lying—it's a survival skill I perfected before I was old enough to properly tie my shoes. But Sophie is looking at me with those warm brown eyes that see through every defense mechanism I've ever constructed, and she's my best friend, which means she's earned at least the skeleton of the truth.

I sit down on my bed, take a breath that tastes like bergamot and self-sabotage, and tell her everything.

The thesis. The hypothesis. The fake dating arrangement that's supposed to be a controlled experiment in my own emotional responses to romantic stimuli. The documentation. The detailed notes about Marcus's behavioral patterns and my own physiological reactions that I've been keeping in a password-protected file like some kind of emotionally constipated scientist.

Which, to be fair, I am.

Sophie listens without interrupting, which is either a very good sign or a very bad one. When I finally finish, she sets down her chai tea and just stares at me for approximately seven seconds, which is roughly six seconds longer than my anxiety can handle.

"Let me make sure I understand this," she says slowly. "You're fake dating Marcus Reid to study how your brain responds to romantic stimuli, and you're keeping detailed notes like he's a lab rat?"

"He's not a lab rat," I say, which is technically true but also completely missing the point. "He's a willing participant who agreed to this arrangement."

"Did he know you were going to be analyzing your own emotional responses like some kind of heartless robot?"

"I'm not heartless," I say, and there's more defensiveness in my voice than I intended. "I'm scientific. There's a difference."

Sophie gets up and sits on my bed, which is a tactical move designed to make me feel more vulnerable and also more loved, which is exactly why it works. She takes my hand, and I notice that her fingers are warm and her grip is gentle and I'm going to cry if she keeps this up.

"Iris," she says softly. "You know this is insane, right? You know that you can't actually control this? That feelings don't work like a lab experiment?"

"Feelings are just neurochemistry," I say, but it sounds hollow even to me. "They're predictable. Quantifiable. If I understand the mechanism, I can manage the response."

"That's not how love works."

"Good thing I'm not in love," I say, pulling my hand away. "I'm conducting research."

Sophie's expression shifts into something that looks like pity, which is somehow worse than anger. "Oh, honey," she says. "That's what worries me."

---

Professor Ashford catches me outside the psychology building on Monday morning.

I'm carrying three coffees—one for me, one for Sophie, and one because I thought I might see Marcus and I'm apparently a cliché wrapped in denial—when Ashford steps out of the building like he's been waiting for me. Which he probably has, because he has that quality of a man who expects the world to arrange itself according to his preferences.

"Iris," he says, and his voice has that particular texture of false warmth that makes my skin crawl. "I wanted to talk to you about your thesis proposal."

"Of course," I say, shifting the coffees to one hand so I can appear less trapped. "I'm excited about the direction it's taking."

"Yes, I've heard." His smile doesn't reach his eyes. "Quite the unusual angle. And I understand you've found a research partner."

There's something in his tone that feels like a threat disguised as casual conversation, which is probably because that's exactly what it is.

"Marcus agreed to participate in the study," I say carefully. "He's been very cooperative."

"Marcus Reid." Ashford says the name like it tastes bad. "Interesting choice. I wouldn't have pegged him as the type to engage in rigorous academic work."

"He's more complex than he appears," I say, and I mean it, which is the problem. Marcus is more complex than he appears, and I'm noticing things about him that don't fit into my neat categories of manipulation and evolutionary psychology. Like the way he actually listens when people talk. Like the careful way he touched my back at the party, like he was asking permission with every point of contact.

"I'm sure." Ashford steps closer, invading my personal space in that way that makes me want to bathe in hand sanitizer. "I just want to make sure you're maintaining appropriate objectivity. Contaminating the data would be a tragedy, given your obvious talent."

"I'm maintaining complete objectivity," I say, and it's only a partial lie.

"Good." He reaches out and adjusts the collar of my sweater—a gesture so casually possessive that it takes me a moment to process what just happened. "Wouldn't want anything to interfere with your work. You have real potential, Iris. It would be a shame to waste it on something as ephemeral as a relationship."

He walks away before I can respond, leaving me standing there with three coffees and the distinct feeling that I've just been warned and threatened and patronized all at once.

---

Marcus texts me at 2:34 AM on Wednesday.

can't sleep

I'm awake because I'm always awake at 2:34 AM, usually with my laptop open and my notes spread out like some kind of obsessive shrine to my own neuroses. I have seventeen pages of observations about him. Seventeen pages of data that I'm supposed to be analyzing with scientific rigor and instead I'm just... reading. Like he's a novel and I'm a reader who's forgotten that there's supposed to be critical distance.

me neither I type back, which is true but not the whole truth. I'm awake because I can't stop thinking about the way he said "girlfriend" at that party. The way his hand felt on my back. The way he smells like something expensive and dangerous and completely intoxicating.

what are you thinking about?

I should say something scientific. Something about sleep architecture or circadian rhythms or the documented effects of caffeine on REM cycles. Instead, I say:

you

There's a pause—the kind of pause that feels like falling.

good or bad?

too early to tell I say, which is a lie. It's definitely bad. It's definitely the kind of thinking that contaminates data and compromises research and makes you vulnerable in exactly the ways you've spent your entire life learning to avoid.

want to get coffee tomorrow?

that's not part of the experiment I type, but I'm already pulling up my calendar.

maybe I want it to be part of something else

My heart does something illegal. Something that definitely violates several of the fundamental principles of my thesis. I set the phone down and don't respond, because responding would mean admitting that I'm not in control of this anymore. That somewhere between the fake dating and the careful observation, something shifted. That Marcus Reid might actually be more than just a fascinating case study in evolutionary psychology.

That he might be dangerous to me in ways that have nothing to do with science and everything to do with the fact that I've spent twenty-three years building walls specifically to keep people like him out.

My phone buzzes again.

coffee tomorrow. please?

I pick it back up and type: okay

And then, because I'm apparently a disaster with no self-preservation instinct: what time?

By the time he responds with a time and a location, I'm already mentally preparing the data contamination notes I'll have to add to my file. The ones that explain how the subject has begun to blur the lines between research and reality. How the observer has become observed. How the experiment has started to feel less like science and more like the beginning of something that could destroy me if I'm not careful.

The problem is, I'm not sure I want to be careful anymore.

I'm not sure I know how.