<human>: Can you condense the text into three sentences or less?

So there's this girl i go to school with, who quite frankly is the most amazing person i have ever met in my life, and i like her. A lot. 
The problem is, she has this crush on a guy in the year above us, and has for quite a while.
He is also in a relationship with someone else, but she isn't keen on the idea of getting into a relationship with anyone while she still likes this guy.
I'm terrible at this whole thing, so  have no idea if she has inclination of liking me at all, we're friends, and have been for a while, but it's always felt sort of one-sided.

my question is, should i simply ask her out and see what happens (please bear in mind she's already turned down a few guys in the recent year and a bit) and if so how the hell do i do that?
<bot>: I like her, she likes someone else (as far as i know), ask her out, ye or nay?