Hiya Spook, you're on my mind a lot. It sounds as if you are doing all the right things. You cannot control his actions, so just let him get on with it while you take care of yourself and your boys.
Indulge yourself in thinking about what you would like to do next, where you might like to live, what pastimes/career/vocations you would ideally like to pursue, what kind of family life you would like to build - with just you and the boys. Then start working towards it.
Every day, think of something you'd like to do that will nourish your spirit - whether that is to walk in a beautiful place, read something inspiring, soak in a hot bubble bath, go for a massage, meet a good friend for lunch, phone someone overseas whom you miss, write a diary or poem, bake a cake, spend an hour playing with a child, etc.
Meet friends and relatives who lift you, and avoid the ones who don't. They can wait.
Pay attention to your health, get plenty of sleep, exercise and healthy food.
Build yourself. Not to make h hanker for you (although he probably will), but for you, so that you can begin to feel better.
I wish I were nearer, I would be round to you all the time encouraging you to come out for a walk or a drink, or to rub your back for you. Don't you have a friend nearby who can nurse you for a bit?
Would you like to come down here for a while at Easter so I can mother you?