Well, that's great news about the talk w/your FIL. It sounds like that's a relationship that will continue whether your marriage works out or not.
I also applaud your decision to not tell him about your DB'ing efforts - be cautious who you share that with.
You sound much more positive, and part of that was having someone to talk to, I'm sure. Enjoy the days when you are feeling more positive - relish those times.