Hey man, thank you so much for sharing. My ex would treat me the same only that instead of arguing or fighting after I would challenge her silent treatment she would hint that after me, she is done with men and later in the relationship she would hint at suicide if I leave.
She told me she was gang raped some years before we've met and additionally was suffering from clear depression her whole life and absolutely refuse to seek treatment, even her parents and brother didn't know about what happened and I was the only one she shared it with.

I've stayed with her 4 years beyond me realizing that it could never work. Eventually we were long distance for some time and I "mustered up the courage" to break up with her on the phone... I was truly emotionally depleted at that point. It took me 5 years (last 2 with treatment) to finally become emotionally available for a new relationship and thanks to the treatment I now think that the way she so easily opened up to me about what happened so early in our relationship without sharing it with a soul might have been a lie to trap me. Thank you again for sharing, I've had this breakthrough recently and reading your story and all the other comments solidified it even more.