Met someone in her sorriorty she told me how my x slept around a lot , slept with her best friends boyfriend,whenever she got drunk she got blacked out drunk , she created drama and burned bridges in her house
Does this sound like BPD
It could be, or it could just be an immature person reacting badly to whatever she's struggling with.
To me, the important question is, does this sound like someone you really want a relationship with? How do you feel about the relationship ending, and does this new knowledge change how you feel?