I catch my stepsister having sex with her instructor

I stumbled upon my stepsister's secret rendezvous with her horny tutor, a man who was clearly smitten by her voluptuous Latina charm. As I eavesdropped, I learned that she'd been selling her body to pay for college. The sight of her getting pounded from behind by this man left me shaken, yet aroused. I decided to intervene, but as I approached, the tutor sensed my presence and fled, leaving me alone with my stepsister. Seeing her in such a compromising position was both shocking and thrilling. Her luscious Colombiana derriere was on full display, a testament to her sexual prowess. Despite my initial anger, I found myself drawn to her, unable to resist the allure of her tight, inviting ass. The sight of her getting fucked had ignited a primal desire within me. What started as a chance discovery led to an unexpected turn of events, leaving me with a burning desire to explore the world of anal sex.