My stepsister reached intense climax during secret massage session

I was hanging out with my stepsister at her dorm, chilling and having a good time. She was getting her nails done and we were chatting about nothing in particular. Suddenly, she started feeling a bit of discomfort in her back and shoulders, so I offered to give her a quick massage. It started off innocent enough, just a little rub here and there, but things quickly escalated as she started to squirm and moan in pleasure. I realized that I had been massaging her a bit too vigorously, but the sight of her writhing in ecstasy was too much to resist. I couldn't help but reach down and start stroking my hardening cock, my hand moving in rhythm with my stepsister's moans. As I continued to pleasure myself, I caught a glimpse of myself in the mirror, the sight of my stepsister writhing in pleasure only serving to fuel my own arousal.