Maybe I'm soft, but I wouldn't break up with her without first having a decent and respectful talk about it. If she doesn't see a problem with what she did, dump her, but everyone's a little impulsive sometimes. If she regrets it, be respectful and don't rub it in her face, and she'll probably like you more for it, even.

No, OP should definitely leave her. She made out with someone else in front of her boyfriend, that screams disrespect. I wonder if you'd feel the same way if a guy made out with a famous female musician in front of his girlfriend.

I said "I wonder", that's great that your standards are the same for both genders. I wasn't assuming you were sexist, I was wondering if you were. A lot of people, guys and girls, are these days. But OP should definitely leave, no doubt. He's just inviting more problems if he doesn't.

I would have left her ass there.

if you stay together you have a free pass to kiss a rock star of your choosing

Come on! You can't possibly deny anyone of the pleasure of making out with their idol! Not when that person might be (in my case) Shannon Leto.. It's a once in a lifetime opportunity

Normally I'd agree everyone has their fantasy. Though the description sounds much more random.

For some reason, you really don't deserve a girl friend.

seems like lots of girls are showing their true colors in the comment section too. I blame the media

EF your life. but then again, its not every day you get the opportunity to Mack on a famous person lol. still bad gf