He says it's really hard and it's starting to hurt so he goes to pull his pants down. "No no no, don't take it out." you say, but it's already out before you can finish. "Oh my god, I can't believe this." you say. "Please please please." the step-son begs. You say no and that it's wrong but after enough begging you finally agree to jerk him off "but that's all."
You say lots of things like "I can't believe I'm doing this" while you do it but after a while you start to get into it and you have to admit you're a little impressed at the size for your age. The step-son keeps begging for more and you eventually break and take him to the living room for a blowjob and then let him fuck you. Near the end while you're fucking you hear the step-mom getting back home. You have to hurry him up and have him cum inside you. You are able to get your pants back on just before she walks in the door. She asks how it went and you tell her he was "such a good boy."
nw