Aaargh that sucks, know this feeling.
What killed me the most, after we ended the 3 years relationship (without hate and injured pride)...10 days after she had a new boyfriend and is acting like a porn queen (!) We were engaged and I really loved her! Not only that I were very sad because of the division...she also destroyed my self esteem and I fell into a deep depression. Hardest time in my life!
I´m really sorry for what happened to you... Sounds like a nightmare.
We ended it without hard feelings too. But she´s not the type for that porn queen stuff I don´t think I´ll see her very often. I don´t get out much, because I have loads of stuff to do.