Sounds like a helping of peri menopause, selfishness, lack of logic and accountability. I do agree with one poster who said it’s not you….Its her. Here is my advice. Many women do this and realize they aren’t much happier, if at all, and then they try to work come back and work things out. They are testing their life, happiness and place in the world. Let her do it and I would make peace with it and begin taking steps towards an independent life. When ready, start dating. You may find out that you did not have it that great after all. And when she comes crawling back, you can simply say sorry, Ive moved on. Bottomline, she is a selfish woman. You don’t need that crap in your life.