Confused Feelings :S

Okay, There is the guy that i Like, but he's my ex- Bf. Witch creates problems, he know's i like him and he's "In love" with his other ex Gf. But he talks to me 24/7, Ask's me to hang out, and sits realy close to me ^^. But i dont understand it, It's like he's telling me one thing but acts the other way. and i dont wanna bring it up becuase it will eather end it heart break, or awkwardness, So if you all dont mind id like some help here, i have NO CLUE what to do!! Please help!! 3