Chrysalis, it's so good that you no longer want to try to make up for his lousy family past by being his emotional punching bag.
Good that you're having therapy. And definitely wise to get legal advice and whatever other support you can. Maybe speak to a women's shelter or something similar?
And I also agree that it's very unlikely you or anyone else can change him; but at least now that you know what you know and have set yourself free within, the stuff coming out of his inner black hole can't hurt you so much. Make sure you feed your belief in yourself and do things and be with people who help you build up the good impressions you have of yourself.
Peace and power to you
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