They say when you love someone, you let them go. He's only proving that he never did. She was simply a possession he couldn't let go of entirely, even though he was forced to because if not. She would be dead. People are believing that they need to work on things together and I don't believe they should. Unless you've been with someone that entirely drives the life out of you, you can't possibly want them to work things out. Some people come into your life for two reasons; some are to show you a valuable lesson and some are there to assist you on your journey. In this case, he's a lesson that she will have to get through. No matter how much communication, working things out, or even the simple 'let's fix this'. The amount of pain, regret and trauma. Nothing will ever be the same. He had multiple years to sit down and formally introduce himself and his past to her. He didn't. Never once. Matter of fact, he blamed her most the time. Guilt is what is eating himself alive and his pride. She's simply tired of how miserable she's become and is when she is around him. It's time for them to say goodbye and end it.