Happened a couple weeks ago with this girl I'm sorta dating. I was pretty shocked and I've been beating myself up over it lately. We'd been making out/fooling around for 1-2 hours beforehand and deciding whether or not to have sex, and I wonder if my body had just had enough. I had also just moved home from college and my mood was kinda in a funk and I had no appetite, so maybe I was depressed or stressed or something? Or maybe I was nervous because I actually like this girl and it wasn't just some random chick. I dunno, but it's somewhat upsetting. It happened once before with this other random girl a couple years ago, except she was just giving me head. Similar situation, made out/fooled around for hours, I was ready to go the whole time, we haggled over what to do, and by the time any action happened, I was just tired/over it. Thoughts?