I totally understand how you feel about DB'ing. I have questioned some of the tactics myself. In my case, there have been times I really SHOULD have picked up when my H. was calling me, but I was trying to put distance there, be mysterious, wait a few hours and call him back later, etc. I screwed up a few times by playing it this way.
You do what you have to do. Leave no stone unturned. If you have to try something else, do it. You don't want to ever doubt that you didn't try everything. I am behind you.
Most of us really marry only once. First love endures, even unto our dying day. And we never really divorce.