My crush? How can I be pretty for him? Do you think he likes me?

See, he's a flirt. Every1 no1's that. But not in a bad way, he just jokes around with every girl. Every time I look at him he was looking at me..I love that. He's not real confindent when he talks to me, i think. Cuz the weird thing is he hugs me once b4 recess[middle school], but then other times when i p him or he pes he doesn't say anything, just walks by.. =[ He always appears by me too. But do u think he likes me. He wasn't flirting a lot since i've really liked him, but lately he's been flirting EXTREMLY a lot. I think he knows, cuz i look at him a lot.. :\ How can I be pretty for him? Does he EVEN like me..? =[