Paul, you and I have talked a little about this already, but I'll add that I feel for you, man! I know that things will work out for you, even if there are times when it doesn't feel like that's ever going to happen.
I also know what it's like to get kind of blindsided. I got hit a few years ago when my (ex)wife finally decided that our marriage was cutting into her time with her boyfriend! Pretty dark times followed, but after weathering the storm, things did indeed get better.
So hang in there, and know that there are a lot of folks on this board, and elsewhere, who are here for you and happy to talk about it any time.