It upsets me when smart, atractive girls that have everything going for them fall in love with a complete imbecile. Several close friends of mine qualify in that group, and from what I read in this thread, I dare say you'd fit that description too.
I find it a bit pointless to say "men are like that" or "women are like that" because in reality it's just part of human nature to do screwed up things in regards to relationships. And even though to an outsider it may be obvious that a relationship is dead, one part sometimes clings to false hope that things will get better. It's never easy if you're the side who thinks things can still be salvaged, and from what I've seen, you have good days and terrible days for some time to come.
But I think it's great you're going to live to a new place, for sure that will help, and it's good you're seeking support from other people. Some might find it usefull to talk to a doctor about all this, you might want to think about this too, I know it helped my friends deal with their issues. Also, you might want to pick up a new hobby? Have you been thinking about taking dance lessons for some time? Singing?? Going to a track day?? Skydiving?? Now's the time for you to pick up on it
...and I'm happy to report that those friends who I've just compared you to are thriving once again. Keep your head up, let your friends support and love you and no dobut you'll be in good shape after a while.
PS: If you want to be reminded what love and loyalty feels like, get a dog