Fix body language

What body language tells me this guy likes me ?

I sit next to this guy in class and he flirts with me sometimes but what body language shows me that he's interested ? Thanks :)

Public Comments

1. a b**er is usually a good sign
2. ONLY YOU WOULD KNOW THAT BUT JUST ASK HIM
3. He will act like he wants to love u. This are some tips
4. If his knees and or belly button are faced towards you..
5. Engages in direct eye contact. Casually touches you. Puffs his chest Winks as you from a distance. Smiles suggestively Arches his back. Sways his pelvis