Struggling to process a breakup with a BPD girl. It was complicated. Can anyone DM?

I don't want to put too much detail here but basically had a months-long thing with a BPD girl then it ended suddenly with no closure and I am struggling to understand it and move on. I am still hurting even several months later. There is a lot of context I could explain but I just want to talk with someone who has been through this so I can make some sense of it. It's both my first BPD relationship and my first relationship at all.

I'd appreciate anyone who reaches out. DM please.