Take a gander at the essence of someone with BPD. Op is a black and white, come here, no go away; I love you, no I hate you thinker. You are either good or you're bad at any given time until hanging around with her makes you as crazy as she is.
I'm out because it's like talking to a toilet seat thats continuously going up and down.
No one will change her mind on what she believes already to be true. No one will be able to educate her any differently.
BPDfamily.com..Lilia.. they will relate to you better then anyone here could.
P.S. Don't bother getting offended. It is what it is. Even your title of the thread suggests that it's either one or the other "Is it Good or is it Bad?" Not even a consideration that it's neither and just something that he said in passing or to save face because he had previously told you he wanted to shoot his wad on your body.