Hi Fubar1970,
I'd like to welcome you to bpdfamily. I'm sorry to hear about your diagnosis and that you're going through a difficult time. We can't diagnose because we're not professionals, but what we can look at are BPD traits. Feelings are like quicksilver for a pwBPD and change rapidly. A pwBPD will alter reality to match their out of place feelings. I understand how frustrating that feels when your partner doesn't apologize for bad behavior, it builds up resentment over time, a pwBPD have difficulties reciprocating in a romantic r/s, this is who she is.
A pwBPD feel low self worth, self hatred, self loath and need a lot of validation. Probably one of the most useful tools is to not JADE, don't Justify, Argue, Defend or Explain. It stops conflict before it starts, BPD is a serious mental illness, my ex may believe that the sky is red, her reality is real to her, what she was raised with is her benchmark, it doesn't mean that she's right, it means that it takes two for conflict and it takes one to stop it.
Validation is a useful tool to use with highly sensitive people, it helps go validate her feelings, it makes her feel heard, invalidation builds resentment in a r/s. I'm glad that you decided to join us.
Communication Skills - Don't Be Invalidating