I'm pretty sure the story was on here. It was about a guy traveling home (from college I think) with his girlfriend and father. The girlfriend would fuck in her sleep during the night and I think the father was a sleep walker/fucker too. During their trip, they stopped at a motel and the daughter sleep walk/fucked the father during the night but then neither remembered in the morning. I think it might've been less than 10 chapters and I'm pretty sure it was written from the boyfriend's point of view.
