Do asexuals exist?

[letswastemoney]

I need romance advice. Do asexuals, or people who don't want sex at all from anyone at anytime, exist? Or is it just some clever scheme for girls to tell you they only want you as a friend, without hurting your feelings. Or maybe I should just accept the fact that I won't get sex out of her, no matter if she's lying about the asexual thing or not.