I don't know what to label this personality, but it seems as though they love to prey on pwBPD, they claimed to be BPD themselves, but they aren't narcissistic either. Often times, their partner is a narcissist, and yet they prefer BPD as their supply, they can use either BPD or NPD as their supply, either get supply from a communal narcissist, or they get supply from an empathetic pwBPD. What kind of person is this?