^ Honestly, I've experienced the exact same thing. You need to decide what's more important, her or the other guy. Will he get over it? Will you care if he doesn't? If the answer is no and no, Go for it. I chose the more diplomatic route, but again, you need to decide based on how much you want to keep him as your friend and whether or she's worth it.
< Ah, hormones.
V Any complicated relationships?