Jesus Christ, BN. Just ask her to give her a shot. Who gives a fuck about the other dude. It'd matter if he was a FRIEND, but because he's a supposedly "great guy" isn't pertinent. Love is a battlefield, dammit. You snooze you lose. Don't lose this opportunity if you're both interested in each other. That would be stupid. Just don't help her cheat, that's where you cross a line.