I tutor my timid stepsister in playing and we end up having sex

After a long day at work, I found myself in the living room with my stepsister, who was struggling with her math homework. As a math tutor, I decided to lend a hand and help her out. Soon enough, the conversation took a turn towards more intimate topics, and before I knew it, we were discussing our sexual desires. Surprisingly, she revealed that she had never been with anyone before. Being a good brother-in-law, I offered to show her the ropes. We started off slowly, exploring each other's bodies, and before long, we were fully engaged in a passionate encounter. Despite her initial shyness, she proved to be a eager and enthusiastic partner, taking charge and showing me just how much she enjoyed being pleasured. The sight of her beautiful body and the sounds of her moans only fueled my desire, leading to an intense climax that left us both thoroughly satisfied.