WH, our particular kind of MLCer are control freaks - they even try and control reality.
They will do anything to stay in charge, and damage themselves, and any possibility of good long term relationships with their children and former friends.
They tell themselves endless fairy stories about their life, then, now and in the future. Probably not dangerous, but certainly a little crazy!
WH you are not the problem, he is. Just hang on to that thought, because he will try and convince you otherwise!
It will be over. I can't say he won't continue to contact you and be difficult, but it will run off you, like water off a duck's back. Their relationships will never ever work out, even if they stay together because they are deeply damaged goods.
Actually they did us a favour by leaving - I can see that now. Although at the time it was the most horrible thing in the world