how can i talk to this guy in my class and get him to notice me?

[rox and ruby rock ! :D]

Theres this guy in my class that i like but I'm not sure if he likes me. How can i tell? He's really shy but isn't as shy as when i first met him. He was staring at me today when I pulled my top in (sounds weird but me and my friend were comaring hip sizes weird i know). But i don't know if he actually likes me, how can i talk to him/ get him to notice me?

Thanks for reading x