Sorry to hear that.
I know what you mean though about knowing when a breakup is coming. That can be the hardest part about it. The suspense is so great you just want them to end it but at the same time you don't want it to end. Just try and keep busy and not think about it to much. I know, much easier said than done but just handle it the best you can.
Good luck and I hope everything works out for you whatever happens.
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"Love is as much of an object as an obsession, everybody wants it, everybody seeks it, but few ever achieve it, those who do will cherish it, be lost in it, and among all, never... never forget it."
-Curtis Judalet