hi Chelsea 69
this is a tough situation and i dont think anyone here would judge you as a man walking away from his responsibilities. its no easy task to set or maintain boundaries with a person with BPD, especially when your child is caught in the middle. have you had the opportunity to read up boundaries? you can do so here:
BOUNDARIES - Living our values BOUNDARIES: Case studies there are no silver bullets or guarantees, but there are ways to better navigate the difficulties of coparenting that can make the situation more manageable. you might also consider discussing your situation on our coparenting board, which you can find here:
https://bpdfamily.com/message_board/index.php?board=9.0