My girlfriend, her step-sister @MiaMelone and we live in the same apartment. I woke up to the fact that my friend's step-sister asked me to rate her new underwear for a date when the girl was resting next to me. She started asking if everything was fine with us in sex, as my friend told her that I had problems with my penis. I got angry and decided to prove to her that everything is fine! The beauty allowed me to fuck her mouth and tight pussy, after which I finished on her new underwear. We fucked next to my girlfriend, and I was insanely excited that I had broken this taboo. My beautiful girlfriend woke up the moment I finished.....