Ok I have a situation that I need help with. Here's the outline....
I'm 17 and there's a few new girls in school (year below me). About mid October, I liked one of them, and chatted to her on facebook (sad I know), but then I found out that she had a bf. I asked for her msn address but was certain she'd given me a false one because I'd seen her give out a different msn address to someone else on her facebook wall. Besides, when I added the msn address she gave me, it was placed under 'non instant messenging contacts'. Anyway, I left it like that, didn't press her about it - I just left it after all I was only introducing myself and being friendly!
Anyway, from about mid November onwards, a little while after I stopped talking to this girl I liked over facebook, 2 or 3 of her friends started to notice me and stared a little. They stopped looking with interest around the end of November.
Now the intrugeing bit... one of the girl's best mates has just started to stare at me and take a lot of notice of me .. but only recently. Numerous times she has stared at me, but with no obvious smile.. a fairly blank expression much like how the other girls did. This recent girl is called Charley and she also at times looked at me, and when I looked at her, she quickly glanced away, as if she were pretending to look at something else!
I would consider myself as good looking, with a slim figure, and I seriously think she may like me. I mean, every day I can count about 2 or 3 main times when she has given me that stare or quick glance. I 've just had a short spiked haircut lol and tbh, a few other girls in different years have been giving me the looks lol.
I'm a little confused as to why Charley is looking at me the way she does. She will probably be looking at me first, then nI'll look for about 3 or 4 secs because Im not confident. She keeps staring!! The day after she looked at me lots, her brother added me on facebook. He is in my year.
The thing that makes me think that she may like me is that the first time she looked at me, she did so not with friends (as in the friends were pointing me out to her) ,, but she took a really good look at me when we walked past each other at school..
Really need help here

What do I do, and what do you think is going on??