You're mine, brother.
Warm, calloused fingers wrapped around my bare cock, stroking from root to tip in one long, torturous pull.
“Fuck, you’re dripping for me,” he growled against my ear, breath hot, stubble scraping my jaw. “Look at you—already shaking. You love this, don’t you? Knowing I’m your stepbrother now. Knowing anyone could walk in and see me jerking off my new little brother in a public restroom.”
I gasped, hips bucking into his fist despite myself. He started a steady rhythm—tight, twisting strokes that made my knees buckle.
“Those pretty sounds you make,” he rasped, lips brushing my throat. “Moaning like a desperate little slut every time I touch you.”