My father remarried and I have a beautiful, big-breasted stepmother, but I'm always making out with my father and it's awkward. But my father was cheating on her! My stepmother, who couldn't tell me that directly, asked me to have an affair with her for some reason! She asked me to do it just once, and let me do it until I'm satisfied. I got an erection! My mother-in-law, who was more aroused by my cock than my father's, was a predatory cowgirl, more intense than I had ever imagined, and she kept coming back for more, even after I had cum inside her not once, not twice, but three times!