Sounds like this person may have become toxic to your mental health. There is only so much abuse a person should take and I would say you've had enough negativty from this person. I would say it's time to cut ties, which is never easy to do.
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Bipolar I, Depression, GAD Meds: Zoloft, Zyprexa, Ritalin
"Each morning we are born again. What we do today is what matters most." -Buddha