This happened several years ago with my dad's girlfriend who was twenty-two years younger than he was. One day when he left for work, we were alone together and just started talking about sex; our experiences, our feelings about it, etc. Well, I started getting pretty hot and she noticed. So, she asked if she could see my package. I took it out and we both got hot. After that, it was on to full blown sex for pretty much the rest of that day. We only had sex one other time when I just happened to stop by her apartment for a visit, but my memory of that day will never leave me. My dad, who almost married her, never found out.