I'm glad you're working through things together! Whether it's BPD or PTSD (and there's quite a bit of overlap there -- I suspect my H may be more PTSD than BPD, but it's hard to know), working on communication tools and understanding the other person is key. I know, with me, losing my cool never goes anywhere good but if I keep calm and keep it together, H's flame will burn out quicker. Not always easy in practice, though.
Hang in there and keep posting!
