You accidentally see your stepmom's pregnancy test in the bathroom trash and ask her about it. She's uncomfortable but lets you know that they had been trying for a while, and it had been unsuccessful. A month later your stepdad is going out of town for a business trip and you assure your stepmom you would do anything for her, and that even meant getting her pregnant. She's shocked and immediately says no. She couldn't imagine doing such a thing with her stepson. Soon after she walks in on you while you're changing and realizes you have the perfect equipment for this. She tries to be very clinical but as soon as you enter her, she gasps at your thickness and length, and it makes her cum harder than she ever did with your stepdad. The next day she says that maybe you should try a few more times, just to be sure.