I really wish I had some words of wisdom for you because I'm going through the same thing. Get closer to your family, do something for YOURSELF, and don't ever ever blame yourself. It's never just one person.
This is disloyalty to an extreme. Abandonment is the worst kind of disloyalty.
Yes, it is, especially when the one partner does NOT want to even attempt to work on things after so long. It is not fair, or right, that one person makes such a decision.
I think you will find out that you are alot stronger than you give yourself credit for, and you need to believe that you will be ok. Give yourself time to grieve, but don't let it become the focal part of your life. Once you come to terms with it in your mind, then your heart, you will beable to go on and be better for it.
BB