Hi Misasex,

I'd like to welcome you to the community. I'm sorry that your relationship has ended. That is painful, and with BPD in the mix it can feel worse than "normal" breakups. That was definitely my experience. Things DO get better, though. They have for me, and they can for you, too.
Is your exgf still with the man you mentioned in your post?
How are you feeling since the split?
Keep posting. We're here for you.
heartandwhole