by compton » Tue Jan 18, 2011 2:54 am
I would say from my own experience with an HPD partner: they do not lie about everything. MIne, for example, is scrupulously honest about her age (37) when posting on dating sites, where almost everyone else is lying about their age.
I would change the joke answer from "Their lips are moving" to "Their lips are moving and they're talking about their love life." Because when it comes to partners, sex, romance, in short, to their private life past and present, they will constantly lie. You literally cannot believe anything until you've found some corroborating information.
Do they know they're lying? Yes; the furtiveness, the efforts to cover their tracks, the reluctance to get drunk around their "steady" partner (and only around him), all these things point to their awareness that they are lying, and their fear of being caught out.
They are excellent, just excellent when it comes to the thespian/acting part of lying, precisely because they feel so little moral compunction about it. And they can even cry when discussing something that never happened. But they are hopeless when it comes to keeping their stories straight; they just don't remember what they said.
Anyone dating someone you suspect has HPD: Keep a diary, and write down the person's accounts of where he/she was on a certain day. Then ask casually about it a week or two later. The person will either tell you something different or freak out about being asked at all.
In any case, all partners of people with HPD should keep a diary anyway. Otherwise you WILL begin to doubt your own sanity. The lies will really mess up your own sense of reality, I assure you.