>>1
Jesus christ! This is almost exactly my story. Key differences are that everyone hates him (her friends and my friends, he doesn't really have any friends, more on that in a minute), it was obvious what he was doing (everyone was just blind to it), the friend in question was essentially my best friend, and it involved a rather international and multi-ethnic crowd. I could write a long ten page documentary of what happened, but I'll hold off, unless people want it.

Revenge is completely justified. There's supposed to be a level of trust between friends that shouldn't be violated. Cockblocking for no reason is probably the most serious violation of this trust. If your other friends aren't supporting you, you may be forced to drop them. Not in that you'd say "fuck you", but you'd stop hanging around them. Do your own thing instead. If they're not going to back you up, than you don't need to back them up.

If there's any sort of ammunition you can use against him, use it. I've obtained nude pictures of the guy's ex-fiance (it as surprising he ever got to that point with a girl, as he's a huge manwhore and when it involves asians, he'll jump at the chance to sleep with one. although he's somehow been faithful this time, nobody can see how an attractive 29 year old could be interested in an unattractive 21 year old like him. he's not even an alpha male, except for the sex drive), which were found on his computer. AFTER he started sleeping with the girl we wre both after. I'm planning to begin distribution shortly. Subtley at first. It's a bastard thing to do, but once people figure things out, there's going to be hell pay for him.

Fight back. It doesn't matter how, as long as no one gets hurt (physically. emotional damage is the point of revenge here. violence is never the answer). Don't have a Bad Day like Daniel Powter. Remember the immortal words of Twisted Sister- We're not Gonna Take it Anymore.