What makes BPD different from any other personality disorder is that your anger and impulsiveness -- acting out, kicking over a chair -- only happens when you're dealing with people you really love. If it's somebody you don't care about, who cares?
That's the thing I never did. I'm very grateful to him and he was a good person. I promised myself that I'm never going to let something like that happen to anyone else I know on my watch.