Thank you for the reply. I'm really struggling with this at the moment.
It's OK to struggle. It's really good that you can acknowledge that's going on for you. It can be hard feeling and experiencing the struggle. How does it show up physically for you? Anything you notice?
In answer to your questions- Ideally we would reconnect, talk and things would go back to the way they were. However, given what I know about her I'd say the chances of this are slim to none.
Yes, that makes sense. For many "broadly normal" relationships, when there's a rupture, discussion and "talking through things", including the facts, can lead to understanding and an ability to move forward. However, if all it took to mend a relationship with a pwBPD was "talking through things", and doing "broadly normal" relational repairs, this site wouldn't be here! I wonder if you're recognizing that based on who she really is -- which is not only the "two months where it was heavenly" but also the chaotic, impulsive, dishonest, unfaithful side of her -- the whole -- she won't be able or willing to connect, communicate, and repair.
This doesn't make the inclination to respond any less, sadly.
That's really understandable. We want to be heard and understood, and to have closure.
What would you want to say to her, if you could? This is a good place to write it out without sending it, if you feel up for it.