My father remarried and I got a beautiful, busty stepmother, but she always flirts with my father, which makes me feel awkward. But my father was cheating on me! My stepmother couldn't tell me directly, so for some reason she asked me to cheat on her! She said, "Just once, let me do it until I'm satisfied!" and I got an erection! My stepmother couldn't contain her excitement at my cock, which was more erect than my father's, and she was more predatory than I could have imagined, and even after I came inside her not once, but twice or three times, she still wanted my cock again and again!