The key was still warm from her pocket.
Claire pressed it into his palm in the hallway outside 4B, fingers closed over his for half a second too long, and said, "He's in Denver till Monday. Don't be weird about it." Then she was gone down the stairs in her coat, already late for the thing she was late for, and Noah stood there with her brother's apartment key biting the soft center of his hand.
Don't be weird about it.
He had been weird about it for three years.
Marcus was his closest friend — the kind who borrowed money without asking twice and showed up with takeout when Noah's mother died. Marcus had a laugh that took over a room. Marcus also had a younger sister who used to steal beers from the fridge and sit on the fire escape in bare feet, and who had, at some point while Noah wasn't looking carefully enough, turned into a woman who looked at him like she already knew the answer.
Claire was twenty-six. He was thirty-one. Legal. Fine. Except she was Marcus's, and the line was not drawn in chalk.
He let himself in.
The apartment smelled like Marcus — coffee grounds, the citrus soap from the bathroom, a faint note of the leather jacket always hung by the door. Noah dropped his own jacket beside it and stood in the dark kitchen with the key still in his fist. On the counter: a note in Claire's handwriting, left under a bottle of wine that cost more than either of them usually spent.
*Don't overthink. Kitchen light's broken. Bedroom's the only one that locks if you need it. — C*
He opened the wine.
---
She came back at eleven with rain in her hair and a grocery bag that held nothing useful — olives, dark chocolate, a second bottle. She kicked the door shut with her heel and looked at him across the island like she was checking whether he had fled.
"You stayed," she said.
"You gave me a key."
"I gave you an option." She set the bag down. Water ran from her hair onto the collar of her sweater. "There's a difference."
He poured her a glass. Their fingers brushed on the stem. She didn't pull away.
"Marcus would kill me," he said, because someone had to put it on the table.
"Marcus is in Denver fucking a woman he met on an app." Claire took a long drink, throat working. "And I'm not twelve. And you're not his property. And I've wanted this since the weekend at the lake when you pretended not to watch me get out of the water."
He remembered the lake. The black swimsuit. The way she'd wrung her hair out with both hands and looked straight at him while Marcus yelled about the grill.
"Claire—"
"Say my name like that again and I'm going to climb over this counter."
He set his glass down carefully. "Your brother—"
"Is not in this room." She came around the island. Close enough that he could smell rain and the olive brine on her fingers. "I'm asking. Explicitly. Do you want me, or did I invent three years of you looking at my mouth?"
He could have lied. He had practiced lying about this in the shower, in cars, in the half-second before sleep.
"You didn't invent it," he said.
Her mouth curved, not quite a smile. "Then stop protecting him from something that isn't his."
---
They didn't make it to the bedroom that locked.
She pushed him back against the fridge and kissed him like she had been storing it up — open, deliberate, teeth on his lower lip hard enough to sting. He made a sound he would have been embarrassed by if her hand hadn't already been under his shirt, palm flat on his stomach, sliding up. The fridge hummed against his spine. Somewhere a neighbor's TV laughed through the wall.
"Couch," she said against his mouth. "I want room."
They stripped in pieces. His shirt. Her sweater, damp at the neck. He got her jeans open and she laughed once, short, when he cursed at the button. Underneath: plain black underwear, nothing staged. He went to his knees on Marcus's living room rug and hooked his fingers in the waistband and looked up.
"Yes," she said, before he asked. "God, yes. Don't be gentle because you're guilty. Be gentle if you mean it."
He meant it.
He dragged the cotton down her legs and put his mouth on her without preamble — the salt of her, the heat, the way her hand found the back of his head and stayed there, not pushing, just present. She was already wet. He worked her open with his tongue and two careful fingers until her thighs shook and she said his name like a warning and came with her heel digging into his back.
When he stood she pulled him down onto the couch on top of her, legs wrapping his hips, and reached between them for his belt.
"In me," she said. "I've thought about it enough."
"Condom—"
"Jacket pocket. Mine. I bought them on the way here like a person with a plan."
He almost laughed. Almost. He got the packet open with hands that weren't steady. Rolled it on while she watched, bottom lip between her teeth, and when he pushed into her she exhaled like something in her chest had finally unhooked.
Tight. Hot. The specific give of a body that wanted him there. He held still buried to the hilt and dropped his forehead to hers.
"Move," she whispered. "Noah. Move."
He did.
Slow at first because the guilt was still a live wire under his ribs — Marcus's couch, Marcus's sister, the key still on the counter catching the streetlight. Then faster because she met every thrust, because her nails scored his shoulders, because she said *harder* and *there* and *don't you dare stop*, and the guilt got loud and then it got quiet under the sound of skin and the wet catch of her cunt taking him and the broken noise he made when she clenched.
She came again with her face turned into the cushion, muffling it, and he followed hard enough that his vision whited at the edges, buried deep, her name in his teeth.
---
After, the apartment was very quiet.
They lay tangled on the too-small couch. His hand rested on the damp skin of her stomach. Her leg was thrown over his. The second bottle of wine sweat on the coffee table, unopened.
"He's going to know," Noah said eventually.
"Only if we tell him." Claire's voice was rough. Satisfied. A little dangerous. "Or if you start acting like a man who just fucked his best friend's sister on said best friend's couch and can't look anyone in the eye."
"Claire."
"I'm not asking you to marry me in secret." She turned her head. In the half-dark her eyes were steady. "I'm asking if this was a one-time exorcism or if you're coming back tomorrow when I text you."
He thought about the lake. The fire escape years. The key in his palm, still warm.
"Text me," he said.
She smiled then, real, and reached down to find him half-hard already against her thigh.
"Good," she said. "Because I locked the bedroom earlier. And I want you to fuck me in my brother's bed before he gets home, and I want you to mean it the whole time."
He kissed her to shut them both up.
On the counter, the key caught another pass of headlights from the street, and held the light for a second longer than it should have.