It is a very hard transition, everything crash down on us and we don't even have too much of a choice.
You are a very nice and gentle person, maybe the Universe have a plan for you to be even happier. I think about this a lot. I even know some people that tough their lives were over while going through the D and then found happiness they never expected.
Our situation is not the same but very similar. My H is nice, have a nice attitude towards me but still says he is moving on. Even said that he can't bring himself to forget how unhappy he was in our R.
Then I think about the times that I want to D him. How I was feeling many times I want that he would just disappear and I would have some peace inside.
I guess it's part of detaching. I have been trying not to think about him all the time. And it's not so bad after all. I do love him, but I am also hurt with the fact that he didn't want to work on our M, even tough I have been asking him for a long time. It was easier for him to just jump to another R.
I admire the work you have been doing on yourself and the strength that is growing on you. One day your H will look back and find out he made a big mistake.