That sucks. But you'll have to live with it. As Jen and the others already said. You'll have to be a friend and a gentleman. She can't help liking him at the moment just like you can't help it that you like her. If you're friend is really not the guy she thinks he is there's a reasonably big chance things won't work out between them. If you stay friendly through the whole thing that'll only improve your chances. I've been in a similar situation once, there where two girls I was normal friends with and both started to really like me a lot. Problem was that they where best friends. They apparently had a big fight about it. I wasn't in love with either of them, so I decided not to date either of them. Just to make sure not to make the problems bigger. And then ofcourse my dreamgirl also has a boyfriend. Luckily I don't know who. I feel with you.

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