to OP: Mind games yo. Sometimes people get bitchy and wanna make you feel inadequate. I've had a girl get actually upset that she couldn't always make me cum. I didn't think it was her fault or anything, I just needed practice to death valley: that's unfortunate... no muscle clenching, no pelvic grinding, no louder than normal moan-idge?
Yeah, the chicas are definitely different from the chicos lol. I don't care how mad I get I ain't hidin no orgasm.