<human>: Can you provide a brief overview of the text?

So as the title reads, I'm 17 and so is he and we go in the same class. But because he has his sports, we don't see eachother as often as I see the others in my class (This will come back I swear). I'm quite sure I really like him but I can't seem to get a grip of if he likes me or not.

We talk relatively often and I try to get a chance to sit with him as much as possible. He's somewhat shy so I doubt that he'd ever make the first move in talking to me, but sometimes he does and that is what confuses me. Because sometimes he can be really open and talk to me a lot and sometimes he can just back off or just not be as social as usual. We have basically the same interests and we joke about the same things all the time and we really enjoy eachothers company. We also talk on Facebook quite often but we haven't exchanged numbers yet.

We have this sort of play-tease relationship so I'm not sure if he takes it seriously or if he only sees me as a friend. And since I don't see him so often, I never really get the chance to sit with him more often (I also have these really clingy friends that want me to sit with them all of the time). And because I hang out with the guys more in class, I'm afraid that it might put him off. How do I go about this mess?

Is it too forward of me, as a girl, to ask for his number or maybe get it some other way and text him? It just seems to me that he'll never take that first step, so what should I do?
<bot>: I like this guy but I'm unsure if he likes me, should I take the first step or back off until he does?