Forward, I do think you should worry about yourself rather than think of the "what ifs" with your XH. I'm not trying to be negative in saying that, I just feel at this time you need to live for you. The last 3 years or so you have tried everything to get him back and make it work, he wouldn't have anything to do with it. You might very well get the remorse or apology someday, but I sure wouldn't count the days, nor would I worry about his progression. Life is too short to worry about such as that. Go have fun! If wants to give you apologies, remorse, or whatever, then he will regardless of what you do.