My step brother watches me pleasure myself on the sofa and gets aroused, leading to a handjob encounter

I was lounging on the sofa, my mind wandering to erotic thoughts, when my step brother walked in and caught me in the act of pleasuring myself. His eyes widened in surprise and curiosity, and I could see the arousal building up in his eyes. Being the adventurous guy he is, he decided to join in on the fun and we ended up mutual masturbation session. As I continued to stroke his hardening cock, the sensation sent waves of pleasure coursing through my body. I could feel his excitement growing as he matched my rhythm, his hand skillfully moving up and down my shaft. It was a sight to behold as he brought himself to the brink of ecstasy, cumming all over my hand in a glorious display of satisfaction. It was a moment of shared pleasure, a testament to the power of mutual masturbation.