The Pygmalion syndrome

Why do I suffer from Pygmalion syndrome?!  Why do I feel attracted to the most hopeless, needy and classless people?  I really don't get it.  It just seems that someone who I might find moderately attractive as a person suddenly becomes infinitely more attractive and desirable under those circumstances.

It's so hard to describe without seeming to be nasty and snobbish.  Anyway, there's someone who I quite like but they seem to be more attractive for being a little rough around the edges.  I think maybe I am going to have tom come to terms with the idea that I seem to be attracted to 'bad girls' with a vulnerable streak.

That, I guess, make me a grade A fuck-up.  I hate myself for it but I can't help it.