I've known him (x) since freshmen year of high school and we've always been good friends, I wasn't genuinely attracted to him. Now I'm a junior and he's a senior and we both do stage crew at school. Whenever I'm by myself he comes by and makes me laugh. He always sits near me. When we do homework together I always catch him looking at me but when I look at him he looks away. He rarely makes eye-contact. But when we do, he smiles and it makes me laugh. And he also tells me about bands I might like. He used to comment on my statuses on Facebook but recently he hasn't done anything. That's the only reason I'm confused.

There's other guys on stage crew, and they always follow me. One of them came from behind me and tickled me, and (x) asked me if he just took my bra clasp off. And I said no and I laughed
and another guy came by while I was doing homework and he touched me on my back and said good luck, and (x) saw and asked if he said he loved me and I said no and laughed.
I don't know if he likes me, is it just because I'm someone he knows at stage crew? I don't know!
and I do like him!

I think that he likes you. Something similar happened to me in the first high-school grade, but he never asked me that kind of questions.

If he doesn't make eye contact and he stealthily looks at you, he tries to make you laugh all the time, he smiles any time you look at him and tries be sweet, then it is a clear sign that he likes you.

I am not sure about those questions. Maybe he tries to tell you indirectly that he would like to take your bra clasp off and that he loves you or maybe he is just playing to see your reaction (taking into account that he is a senior). You should be careful about this. If he suddenly stops being like this, then it means that he was just playing, but if he keeps doing this, you should be patient. If he truly loves you, he will find a way to express his feelings (he could tell you while you are spending time together, he could send you a slip of paper or a letter etc.)

Don't worry. Boys are just so hard to understand sometimes...

Yes, he's interested. It's quite obvious.

He's done everything but jump through firehoops to let you know from what you have said.

I would say the ball is in your court.

Why not ask him out for coffee after the next time you work together. If you keep waiting, by the time you make a move, he'll have somebody else.

Good luck.