Yes, life is far too short and you've done all of the right things. Now, when you look back on this part of the journey later on, you can honestly say you loved unconditionally and treated him and the situation w/kindness. You've done all you could have done and I truly believe that your xh knows this. None of us know what the future holds, but destiny has a way of surprising us. Stay positive and good things will appear in all aspects of your life.
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.
