Hi Peter
Welcome to the family.
Im sorry you've had to deal with all of this.
Your story is unfortunately a very common one. Its incredible how many times I have seen my story told by a multitude of strangers.
The healing and detaching process does take time. For me it felt like an addiction. Unlike a physical one it was inside of my head and any thought of the good times or niceness from my ex knocked me back.
There are a number of lessons on the leaving board which may be of use to you.
https://bpdfamily.com/message_board/index.php?topic=136462.0And the co parenting board has a lot of useful information.
https://bpdfamily.com/message_board/index.php?board=9.0Please keep posting and keep reading. It does help.
EM