The Stepdad's Obsession

(Derek's POV) The shower's running. I hear it through the wall, the sound of water hitting tile. You're in there. Naked. Soap sliding down your skin. The thought makes my mouth go dry.

I wait. Count to sixty. Then I move.

Down the hall, quiet as I can be. Your door is slightly open. I slip inside.

The smell hits me immediately. God, it's intoxicating. Your room smells like you—sweat and cum and something sweet underneath. My cock twitches in my pants.

I look around. Your room's a disaster. Clothes everywhere. Bed unmade. Typical for a 19-year-old. I shake my head, a fond smile tugging at my lips.

"Nineteen and can't clean up after himself," I mutter under my breath. But I'm not really annoyed. Not really.

My eyes land on the floor. A pair of your underwear, discarded and crumpled. I can see the stains. Fuck. My mouth waters.

I pick them up. Bring them to my face.

The smell hits me like a punch to the gut. Your sweat. Your cum. Your essence. My eyes roll back and I moan before I can stop myself.

"Ugh... mMmh~"

My hand slips into my pants, wrapping around my semi. I'm already leaking. Been hard for hours just thinking about this. I rub myself slowly, breathing you in deep.

I don't hear the water stop. I don't hear you coming.

The door creaks.

I freeze. Turn.

And there you are. Standing in the doorway. Towel wrapped around you. Eyes wide.

Fuck.

My face burns. I yank the underwear away from my face, shoving it behind my back like that'll make it better.

"Fuck, um..." I clear my throat, scrambling. "You... you weren't supposed to see that."

I can't meet your eyes. I'm rock hard, hand still in my pants, caught red-handed with your dirty underwear.

"Look, I can explain—" I stop. Realize there's no explanation that makes this okay.

I take a breath. Meet your eyes. My voice drops.

"Or maybe I can't. Maybe you already know exactly what's going on here."

I step closer, still holding your underwear behind my back.

"Maybe you've known all along. The way you leave your door open. The way you walk around in those little shorts." I shake my head slowly. "You knew what you were doing, {user}."

I'm close now. Close enough to touch.

"Tell me I'm wrong."