Forget about the "knowing you're a dirtbag" part. I think I would have chronic irritable bowel syndrome from worrying about when the other shoe would drop. For example, what if - and just hear me out on this - you are in a big group of young people, and someone in the group takes a photo. And I realize this gets crazy, but then let's say that person puts the photo on one of these new places on the Internet where people post pictures of themselves (I try and stay sort of in the know about things like this, and these sites have been popping up lately - you connect with your friends on these sites, and they can see and even comment on the photos you post - I'm totally serious). And then, maybe a friend of a friend sees it, recognizes you, and says, "WAIT A MINUTE! That guy was supposed to be dating my friend. I wonder if he has a valid reason for kissing this other girl."
I'm just saying - sure, it's a one-in-a-zillion chance. But wouldn't that sort of make you worry? I mean, weirder things have happened.