There is an old saying around here, "if something is working, then continue doing it. If something isn't working, then try something else."
Listening and validating are key elements. Listen closely and sift through what he's saying and you just might figure out what is really going on w/him. Sometimes, when they open up, they can't stop talking...so really, really listen.
You are wise beyond your years...only accept 1/2 of the marriage breakdown. It takes two to marry and if one partner has not or will not open up about what they are feeling, how can the other partner know?
You've got this!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.