Quote: Is there some way to let him know that I am glad that he finally was the one to say "we are having problems and Im not happy" It gave me a different perspective on things ...
One way is to continue to validate his thoughts and feelings, whenever he so chooses to express them to you and tell him how much you appreciate that he has opened up to you.
You can add that in his sharing of how he feels, it has opened your eyes on the things you wish to change about yourself. Despite how heart-wrenching the news was, it allowed you to see a different perspective on things. To prioritize what is important in your life, so you can make changes for the better and that is a gift he gave you that deserves the sincerest Thank You from your heart.