I agree with Frank_d, your FIL would appreciate hearing from you again.
I agree 100%. Men like that don't look at a divorce as loosing a Son-IL, they look at it as an unfortunate thing that has happened between their daughter and the man they accepted as a son into their family. There isn't any rejection of you on his part.
It sounds like he trusts you and obviously he is hurting right now. It sounds like it would be very helpful to him if he could talk to you.
I was very close to my FIL, to the point that we talked about our marriages on hunting trips. I haven't spoken to him since my wife POINTEDLY told me that she asked them not to call me after the bomb. I missed our last hunting trip together because of this. I hope to regain that relationship with him after this D is over. I don't care what she thinks, this is our friendship.
Strength and honor friend.
-------------- The Forlorn Hope:...A picked body of men detached to the front to begin the attack....Fortified, meaning strengthened to stand...and thus, positioned for victory