Part 3 I couldn't sleep again. I just had great sex with my wife, but now I couldn't help but wonder if she was horny for Mark and not me. Now she tells me she is going back tomorrow. She already told me she is not supposed to tan two days in a row. Why was she really going back? I got up early the next morning to go to the gym. Boy did I need to let some steam off. I couldn't help but watch the married women that were mo...