He caught the step-mother that you masturbated

When I got home, I found my stepmother in the living room. You was taking. I stopped at the door, waiting to see what he was doing. Was alone in the house, he removed the clothes and started to masturbate on the couch. I couldn’t believe what I saw. My stepmother was really sexy. While I watched I started to touch my cock. But he understood that I was there. He promised me that he would have said to my father. But it wasn’t my fault, he was masturbating in the living room. Then I asked her to let me help with the masturbation. He accepted and promised not to tell my father.