My girlfriend's stepbrother discovers me on his bed and has sex with me

After a steamy session with my smokeshop girlfriend, I found myself in her stepbrother's room, on his bed. The guy, a cool dude with an average body and a massive cock, was chilling on the couch, unaware of the steamy scene unfolding behind him. As I started to get dressed, he noticed me and his eyes lit up with lust. In a flash, he had me bent over, taking his thick member in. The sight of his stepsis getting pounded from behind was enough to drive any man wild. I could tell he was enjoying every second of it. His hands roamed freely over my body, exploring every inch of my skin. The intensity of our encounter was palpable, fueled by the knowledge that his stepsis was just a few feet away. The sight of his stepsis getting fucked while he was getting his fill of her ass was a sight to behold. A truly unforgettable experience.