Okay so I've had sex my fair share of times but tonight I was with a guy I've been on a few dates with and I made him a nice dinner and we watched a movie. Afterwards we were on the couch and kissing and one thing led to another. I don't know why but all of a sudden I was completely overwhelmed and I made him stop. But I don't know why! Now I'm sitting on my couch  and I don't know what to do because I can't tell what I'm feeling. Has anyone had something like this happen before? I mean I'm ready for sex but I'm so lost right now.