I can only imagine how difficult it must be for you. I dont know if you have considered if your XH is in a midlife crisis or not. His anger seems to indicate that there may be that aspect to your problem. If so, I highly recommend some books to you: Understanding the mid-life crisis by Peter O'Conner and the midlife books by Jim and Sally Conway. The first one is very secular and the second one a bit religious. But boths of them helped me understand a great deal about what my wife's mindset may be.
"It's hard when I can't share the good times w/ex." - Oh, yes, I completely understand where you are coming from here. It is extremely sad.
Hope you continue to have good days.
UD
The 3 laws of DBing:
1. PMA is critical to DBing.
2. Since drop in WAW's PMA leads to drop in LBS's PMA and vice-versa detachment is critical.
3. Validate to raise WAW's PMA and GAL to raise LBS's.