Saw this Topic a few days ago and for me, I giggled because MY Reasons are that, well I was messed up, still am to a certain degree but, so much healthier today than what I was before. I'm sure I'll get to the point where I'm not as bothered by things but, I complained a lot back then and then I had this switch that would be flipped that made me extremely happy on other days. It was too much to handle for him and I know it.
I've talked to him about it in January of this year and we had a little giggle. I look back on it now and I know that I didn't even see what it was that I was doing personally, I couldn't see it, my biology wouldn't let me see it. I was no help to him at all though, he had questions about his behavior that I couldn't answer.
So, in my case, the reason my ex is not with me is because of ME sigh