At a high school reunion, my wife and the husband of one of her friends developed a liking for each other. A few weeks later he was able to sneak into town so I took my wife to the hotel where he was staying to meet him. We had few drinks and talked and he was telling us how he was trying to get his wife pregnant but they hadn't had any luck. So I left so they could go to the room and do whatever. I had already left and realized my own wife wasn't using any birth control. They fucked all through the might and he seeded her over and over again. The next morning I picked her up and she still had a vagina full of his sperm.