Hello, Teri50, and welcome. I'm sorry things are rough. It is possible to recover. Your "words twisted, principles negated, fighting which was always my fault" rang a bell. No-one deserves to live like that, which is what makes acting like a "15 year old in a psycho love loop" so difficult to accept in yourself. I write this because I was there 18 months ago. Your astute phrasing is a good sign

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Just as an example of the overlap between the people on this board, I read tlc232's "14 years with someone who got progressively worse" and could have written that, too. Most people who end up here have a lot of common experiences. That really helps when you need to set a new baseline.
Good luck, look after yourself, and write as much as you can.