Into the vortex of a turbulent mind.
So you cease to mean anything to a borderline if you're not right next to them?
What you're referring to is 'object constancy'. Articles on it here. Borderlines can't hold onto emotions (or big picture views of people) well.
Thanks, but I've written quite a lot on Object Constancy. I know what it is.
Leave me a comment! It makes me feel good and less paranoid about talking to myself =)