Conceptually, I think of DB as moving on with your life and making the best life possible for yourself and your children. Your wife is left behind in the dust just watching a great guy move on without her.
As Tread has already mentioned, there's probably an OM. In fact, I'd say there's about a 98% chance there's an OM. Of course, that doesn't change your approach to the situation, but it can help motivate you to get out and GAL and build a wonderful life for yourself.