The classroom smelled like chalk dust and old paper and the faint chemical tang of the projector warming up. Sofia slid into the second row, the same seat she'd taken every day for the past two weeks, and set her backpack on the floor between her feet. She didn't look to her right. She didn't need to.
The warmth of him settled beside her a moment later. Not a sound — just the shift of air, the creak of his chair, the soft thud of his textbook hitting the desk. She felt him there the way you feel the sun on your neck before you turn to look.
Her fingers found the edge of her notebook. She traced the spiral binding once, twice, and tried to focus on the board where Professor Davison was adjusting the overhead projector. The bulb flickered, caught, and threw a white rectangle onto the screen.
"Alright, let's pick up where we left off. Section 2.4 — limits at infinity." The professor's voice was a low drone, the kind that made Monday mornings feel like they'd last forever. "I'll put a few problems on the board. Work them in pairs or alone, your choice."
Sofia heard the click of his knuckles. Once. Twice. A sound she'd started to recognize the way she recognized the bell between third and fourth period. She didn't turn her head, but her peripheral vision caught his hand resting on the edge of the desk. Long fingers. A silver watch with a scratched face. The sleeve of his gray hoodie pushed up just past his wrist.
Her throat felt tight.
The projector hummed. Equations appeared on the screen — limit expressions with x approaching infinity, rational functions with numerator and denominator degrees mismatched. She copied the first one into her notebook, her handwriting smaller than usual, cramped by the awareness of his arm six inches from hers.
"You got the first one?" His voice was low, almost lost under the hum of the projector.
She blinked. Turned. His eyes were on the board, but the question was for her.
"Um." She looked down at her notebook. "I think so. Dividing by the highest power in the denominator."
"Yeah." He shifted, and his shoulder brushed hers. Just a touch. Light. The fabric of his hoodie against the wool of her sweater. Neither of them moved away. "That's what I got too."
She stared at the equation on the page. The numbers blurred. She could still feel the pressure of his shoulder against hers — not even pressure, just the suggestion of it, like a line drawn in the air that neither of them had crossed.
Her pen hovered over the paper.
He leaned forward to copy the second problem, and his arm slid across the desk, his elbow almost touching hers. He didn't pull back. She didn't either.
The classroom narrowed to this: the rectangle of light on the screen, the scratch of pens on paper, the warmth of his body next to hers, and the question that neither of them had spoken yet.
She finished the first problem. Checked her work. Her hand moved automatically, but her mind was stuck on the space between them, on the way her skin remembered where he'd touched her.
"Second one's trickier," he said. "The square root in the numerator."
She looked at the board. He was right. The function had a radical, and the limit as x approached negative infinity needed a sign change. She remembered the rule from her textbook — something about the sign of the leading coefficient — but the details slipped away like water through a sieve.
"I don't—" She bit her lip. "I always mess these up."
"Here." He tilted his notebook toward her. "I can show you."
His handwriting was surprisingly neat, the numbers spaced evenly, the square root sign drawn with a careful arc. He'd already solved it, step by step, the chain rule clearly marked, the sign change circled in red pen.
"See? When x is negative, you factor out a negative from the radical before you divide." His finger traced the line of the solution. "It's easy to forget."
She nodded, but she wasn't looking at the notebook. She was looking at his hand. The way his fingers moved. The small scar on his thumb. The way the red pen had left a faint stain on his skin.
Her throat tightened again.
"Thanks," she said, and her voice came out smaller than she'd meant it to.
He turned his head. Their eyes met. His were pale blue, like winter sky, and for a second she saw something in them that made her chest ache — something raw and unguarded, like he'd been waiting for her to look at him this whole time.
He looked away first. His hand moved back to his side of the desk, but only a few inches. His palm rested flat on the wood, fingers relaxed, open.
She watched her own hand drift toward it.
Half an inch. Maybe less. The edge of her pinky grazed the side of his hand.
She stopped.
Her heart was pounding so hard she was sure he could hear it. She pulled her hand back, fingers curling into her palm, and focused on copying the second problem into her notebook. The numbers blurred again. She blinked hard and forced herself to write, the pen scratchy against the paper.
Neither of them spoke.
The projector whirred, cycling to a new set of problems. Professor Davison said something about rationalizing the numerator. Sofia wrote down the third equation without really seeing it, her hand trembling slightly as she gripped the pen.
Beside her, Liam didn't move. His palm was still flat on the desk, open, waiting. She could feel the heat of his skin radiating across the thin gap between them.
She didn't reach for him again. But she didn't move her hand away either.
The next forty minutes passed in a haze of equations and silence. Sofia solved problems mechanically, her mind half on the math and half on the weight of his presence beside her. Every time she leaned forward to write, her shoulder brushed his. Every time she sat back, the contact broke. He never leaned away. Neither did she.
When the bell rang, she didn't move. The sound felt distant, like it belonged to another world.
"Same time tomorrow?" he asked.
His voice was even, but she caught the slight crack on the last syllable. He was nervous too. The thought made her braver.
"Yeah." She looked at him. He was already half-turned toward her, his backpack slung over one shoulder, his messy hair falling across his forehead. "Same seat?"
The corner of his mouth twitched. "It's mine now."
"Yours?" She raised an eyebrow. "Pretty sure I was here first."
"You were. But I called it yesterday." He was almost smiling now, a real smile that reached his eyes and softened the sharp lines of his face. "Senior privilege."
"That's not a thing."
"It is when you're the only senior in a class full of juniors."
"There's literally one junior." She pointed at the kid in the front row who was already packing up. "And he's leaving."
"Exactly. Senior privilege." He shrugged, but the smile stayed. "See you tomorrow, Sofia."
Her name in his mouth. The way he said it, like he'd been practicing. Like it tasted good.
"See you," she said.
He turned and walked toward the door, gray hoodie, broad shoulders, the slight hesitation in his step like he wanted to look back but wouldn't let himself. He didn't crack his knuckles. That felt like progress.
Sofia stayed in her seat until he was gone. Then she let out a breath she didn't realize she'd been holding, and pressed her palm flat against the desk. The wood was warm where his hand had been.