I'm ao sorry you find yourself here. Unfortunately by the story you tell it seems you are dealing with someone who does not deal with stress or emotions, he seeks answers in others and uses you as a scapegoat for his internal turmoil. You did the right thing by not chasing him as he chooses to run away from his own problems and makes you to be the source of his lack of character. The only you can do now is look after yourself and worry about your own well being. Unfortunately when someone goes through these crisis and don't fix themselves, they tend to leave their loved ones behind and hurt. No matter how many times he says sorry it will not be enough because his actions will never match his words. Stay strong and look after yourself as best as you can.
