I was once friends with the the prettiest girl I'd ever seen. We got along well, and I was not nervous at all talking to her. She was Italian, short, blonde, tan, beautiful... She liked me, but apparently not quite enough. She moved in with a big black guy, then from what I heard took up with another black guy, and I think one more. She had a thing for big black guys. I'm not being racist because I couldn't care less but at the time it seemed odd. Also she said she liked older men. Well she had her fill of black guys and now she's with a short, goobery, pimply white guy. I have no idea what went wrong.
My point is, you never know whether it'll work out or not. But, at least if you talk to her and it doesn't you won't spend the rest of your life wondering
what if... Actually, that wasn't related to my story above at all.
Pretty girls are people too. Just go up and talk. The nervousness will go away after a couple times.
...and once again,
Abstract, mi amigo, you have made me laugh.