this time around, I dreamed I cheated on my boyfriend, not the other way around. With someone I would never actually consider even making out with in real life (too thin for my taste). In the dream, I was so drunk I *in the dream* came to consciousness and couldn't remember if I had had anal sex with this guy. In the dream, I planned to talk to him in lifeguarding class (which IS actually in 2 hours from now) and ask him what had happened.
Waking up from this scares me more than any nightmare I've ever had.