Coping with a heart break.?

After a very turbulent week, the man who I considered to be my soul mate (and who was my fiance) and I have broken up. I never wanted to as I've always believed we would be together forever and could work through anything, but I suffer from a Borderline Personality Disorder, and while I've done sufficient therapy for it to be manageable, I suffered a breakdown on Sunday morning due to my negligence to recognize the signals, putting them down to the demise of our relationship. Today he's told me that he can no longer put up with my condition any longer, which has left me absolutely heart broken. He was always aware of my condition, but because I'd always managed it, he believed it was dormant, or that I was recovered. I've scared him off and at the moment I feel absolutely heart broken. I was never taught coping skills during therapy for such a painful heart break. Will he ever come back? What hurts most is that he's always said that what we had was forever. But obviously forever wasn't strong enough to withstand my 2 hour breakdown in which I'd pushed him and said very hurtful things (I am only going by what he'd told me, I blacked out at the time). I just want to get over him, because I suppose it just wasn't supposed to be if he doesn't love me enough to stick through those rough times. Help, please! Will I ever get over it?