I can relate to that Rommie, even more so then you think.
I've actully had a girl, after months of unnoticed signs just get annoyed at me one night after another night of unsuccessful flirting, wack me up side the head, then called me an idiot and that she liked me.
I never see the signs, but when they say something I put two and two together and things make sense.
And if you want to know the extreme of shy, I'll tell you about my ex roomate and friend. It took this guy 2 hours to tell this girl that he liked her, and another 4 to ask her out. And this is him starting to say something then stopping, then starting again and stumbling over words.