The problem here is, despite any generous explanation you might have for H's behavior (poor addict! His life is going to be so bad now!) you must remember this: he CHOSE to not tell you. He may be an addict who struggled with addiction but he chose not to tell you and therefore deprived you of agency in your own life.
So don't spend TOO much of your time wondering why. You have every right to be furious. Don't waste any time interacting with him further. Let the attorneys handle everything. See a good counselor to help you deal with the trauma and help you recognize red flags in future dates.
Also - look forward! Your life is your own now. Plan the life you want to live going forward. You deserve so much more.
