My stepson and I went to a convention together out of town, and when we checked into our Airbnb, we realized that instead of two bedrooms, there was only one queen size bed. After some discussion, we decided that we could surely share a bed that the two of us had done so many times before, many many years ago. I didn’t know until I started to open the door that he had started stroking his cock. I quickly stood back in the doorway. I couldn’t help but touch myself. It was such a turn-on. I don’t know what came over me, I walked in before he could finish. He seemed very embarrassed. I reassured him that there was no need to be. It’s normal and natural even I masturbate. We masturbated together, and I was slowly teaching him how to have sex. With me!! I could not control my urges. I was patient and calm and loving. The feeling of passion, and how wrong it all was just made it more amazing. He came inside of me and after I let him watch, his jizz dripped slowly out of me.