The part about him calling you names, putting you down, and taking the exact point of the argument in different directions, it's nothing because he doesn't accept anxiety disorders.
Sounds like, he never learned to argue fair. That probably won't change. it would take an immense amount of therapy, for him to peel,back the layers of his own dysfunction, and to do that, he'd need a tremendous desire to change.
Until then, how are you going to internally stop from self vilifying due to his confusing, manipulative style. I call it manipulative, due to mention of tangents, during arguments.
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