“I’m yours,” I gasped, arching up into him. “My stepbrother’s dirty little secret.”

That seemed to snap something in him. He moved lower, sucking one nipple into his mouth while his hand slid between my legs. Two thick fingers pushed inside me without warning, stretching me open. I cried out at the sudden fullness, my walls fluttering around the intrusion. He pumped them slowly at first, curling them just right to rub that spongy spot inside me that made stars explode behind my eyes. The wet, squelching sounds of his fingers fucking in and out of my soaked pussy filled the room, mixing with my broken moans.

“So fucking tight,”...