This is always a tough one and we've all been there, all the emotions running through you it's really difficult to think straight.
I think the bottom line is to see it as a no lose scenerio (especially now you have found this site)
If she doesn't want you, you don't want her. It's a new opportunity to apply the DJ stuff, have a whale of a time and then pick from a position of choice a rational, fit loving LTGF.
If she comes back I'd break her balls, make sure it's on your terms, work on the principle you win if she goes, you win if she stays.
This could be the best opportunity you have ever had.