The problem is that they just dont see that they are doing anything wrong. It is something that has amazed me with both my uBPD exs. When theyre happy and in the idealisation phase with the replacement they forget about everyone else and their feelings.
You have to remember that they have not developed emotionally beyond that of a child.
I experienced the same exact thing. My expwBPD was so disrespectful of me and my feelings.
... .and I think that it is just how you say:
"When theyre happy and in the idealisation phase with the replacement they forget about everyone else and their feelings. "
They just do not think that they are doing anything wrong.
... .at first, I was in shock... I thought that I must have it wrong. Then it sinks in that in an instant I was just totally disregarded and being given the attitude from my ex that this is totally "normal" -here today, gone tomorrow". In her world. Extremely cold and final. Done. Just Served up to me one day, on a cold, cold platter.
This was totally NOT the same person that I had lived with for 5 years. It was extremely difficult to accept. ... .but I had no choice. IT was the new reality, just served up to me one day.
I was an unwanted annoyance to be disposed of. Boom. "Can we get this over with".
We understand Painterly. All I can offer is for you to do whatever you can to protect you. If you can go NC as much as possible. Initially I was so full of hope that I could rejuvenate our relationship (I was being lied to, I did not know that there was someone else), but I was just totally wasting my time and energy. I had been fractured off and discarded and was completely not really included in her thought processes. Brutal stuff.
You can certainly expect more disrespect and estrangement. It is not normal. If yours is like mine, you are dealing with a mentally ill person who is capable of that cold cut off. Just fight to take care of and love you.
My compassion goes out to you.