Masturbating on my stepsister's breasts during our workout session

In the early morning hours, I found myself at the gym, craving some exercise and a bit of self-pleasure. As I was stretching, my stepsister joined me, her athletic figure clad in tight workout gear. She's a stunning brunette with natural, ample breasts that are impossible to ignore. We decided to mix pleasure with exercise, and she allowed me to fondle her big, luscious breasts.I teased her erect nipples, my hands exploring her firm, inviting flesh. The sensation was overwhelming, and I found myself lost in the moment. Her moans echoed through the empty gym, growing louder with each touch. I couldn't resist the urge to continue, my arousal heightened by her close-up beauty.Eventually, we were interrupted by another gym-goer, forcing us to end our intimate moment. The sudden interruption left us breathless and flushed, our hearts pounding with a mix of excitement and guilt. This is a true, amateur video capturing the raw passion and intensity of a forbidden encounter between a young man and his stepsister.