I was batting this around in my head all day and got a chance to work it out here. This may eventually evolve into something else. For now, it is what it is, which isn't much to begin with, but...

She walks into the room, unusually late by all of five minutes.

Head down, her hair obscures pale skin blushed pink from the cold and warm to the touch from the exertion of a vain attempt to arrive at class in time. From where I sit, I can see her mouth opened slightly and her breathing faster than normal as though she floats in post-orgasmic rapture.

She searches for a seat, managing not to make eye contact until sliding into the empty desk next to me.

I meet her eyes out of habit. She stares back for a moment, glassy eyes betraying no thought, before giving a polite smile that says hello there but keeps the comfortable distance between strangers.