are there any girls in the world that like shy guys?

[FatAndFaithless]

And I can see how that's a useful 'skill', but that's not being asexual.

Yes, actually, that's precisely what being asexual implies.

Asexuality can be arrived at in different ways. If we're to be precise in our use of language, however, this is the best way to describe this "skill".

Okay, if that's how you want to use that term.  Just..nobody else here is using it that way.