I was with a girl for 6 years. We were best friends before that. We were together all through college and then some. Got engaged. We had our fights, but i was damned good to her. She had a lot of mental and emotional problems that plagued our relationship, but i stood by her and did everything i could to help her. 3 months before the wedding, her grandfather died. I dropped everything and drove 15 hours straight to be by her side. Almost lost my job over it. Then, a month before the wedding, my last living grandparent was in the hospital. After being in their for a week, the doctors told us that she'd be dead in just a few hours. I called my fiance to tell her, and say that I was coming home to pick her up to say goodbye (my grandma and her were close). I get home to find her with a moving truck and a guy from her work in my house. She said she was leaving and that was that. We argued for a while and she tried acting like it was the best thing for us and that she hoped we could remain friends. I threw both her and the guy she was cheating on me with out, locked the house (with the rest of her stuff in it). Told her if she tried to get in, I'd press charges (I didn't want her and the dude alone in my home) and went back to the hospital to hold my grandmother's hand as she died. The ex never came back to pick up her stuff and I've not heard or seen her since. It will have been two years ago in a few weeks.
Worst day of my entire life.