Based on your situation you might could get an annulment or something. You have moral and spiritual justification to divorce. Ultimately, your M is so young and without kids there probably isn't much hope for your situation.
But you are here, so all I can suggest is that you focus on the GAL/LRT and let your H do what he wants... not much point in complicating your D if you don't have anything to fight over.
"You can't reason someone out of a position they didn't reason themselves into."
