This belongs in the category of high drama, if you decide to get involved. Keep your sanity and let them do their thing. This sounds like a soap opera in the making, these are always viewed best from...
If you are indeed keen on getting your ex girlfriend back, even if her ex boyfriend want her back, what you can do to make sure that he will choose you is make her see your best foot forward. Show...
It really shouldn't matter to you whether your ex will last with his ex that he went back to. Unless you still have feelings for him there should be no reason for this. I would suggest that you just...