Boring long story...we stayed overnight at our guy friends place. We'd been with him quite a few times always at our home. Wife wanted to do it at his place. It was very different at his place but still fun, wife really got into the different atmosphere. Couple more times at our place, always fun. We(she mostly) wanted to do overnight at his place. We're at his place messing around, fun like always. We get done, we're all in his bed, she's in the middle. Was VERY awkward just laying there trying to go to ....... He zonked out, we talked for a few then she fell asleep. I woke up about 2am to them doing it next to me. He was on top going really slow, she kept telling him to be quiet. They thought I was ....... I could her the super wet sounds from down there. He was pumping slow, he told her he was close she said something like I can tell. He started to grunt she said oh yea and moaned the whole time he was letting it go. I've watched him cum with her many times but I guess since it was super quiet hearing them was damn hot for me.