Mr S said:
Okay here's what's up. I'm a virgin, have never had a girlfriend before and I've never gone out on a date before.
Now we've got that out of the way, I'm gonna need some advice.
There's this girl I really like at my school, but I don't think that she thinks of me as someone who likes here.
She probably just sees me as some weird guy she talks to, has some fun with.
She is very pretty, I know of at least one other guy who likes her, and she has sort of a dark humor.
I see alot of people are giving you all the wrong ideas, as a veteran of being turned down let me just share what doesn't fly

- just tell her how you feel (never ever has a girl been with me after I spilled my hearth, and I did it alot because people advised me so...)
- just be around her (that does nothing, you will just end up stuck as the friend, and that is the worst position you could ever be in)
- just be yourself (ya the good old one, trust me this is a recipe for disaster, you "yourself" are probably a nice guy that always end up as the friend, and wanting more from a girl will prompt the "I just want to stay fiends" line, so can you spot the problem there? )
And what you need to know is:
- none of it is a big deal, rinse and repeat that until it sinks in (if she turns you down, so be it, not a big deal, you move on)
- which brings us to confidence (girls want it, they will look for it, and you need to have it, even if you're not really that confident convince yourself you are, and sooner or later it really won't be a big deal and you will be confident)
- take action (girls may come talk to you but they always wait for the guy to take action, always remember that, you make the move and she responds, she may surprise you sometimes, but never wait for her to do so, you are the prime mover... so to speak )
- be serious (don't put asking her out down as a joke, or bring a friend to the date to make it easy, don't ever do that, you say what you say and do what you do)
Now if you can do all that, let's get on to your current issue.
It is dead simple, Ask Her Out, on a date(make sure you are serious about it and that she understands it's a proper date), pick something she would enjoy and take her there (no fiends, no BS, proper date).
And when I say "dead simple", I mean it will be the hardest thing ever, but pull yourself together, and whatever happens remember that it's not a big deal, ever.