That might even be better than a gay friend.
why your asking this?.. you want to know if that girl like you eh?
Whether or not women like asexual men depends on the woman in question and her views on asexual people.
By "asexual" you mean that you're not attracted to men or women, I'll assume (asexual means that you reproduce without a mate). It really depends on the girl, I guess. Most girls will probably just think you're gay. Do you act gay? If you do, then most girls will love you. If you just act like a normal guy, I wouldn't see why most girls would have a problem with a good friendship. Some girls might think your "asexuality" is just a ploy to get in their pants somehow.