What the heck is wrong with this??

I really like this guy in my high school. I have known him since 4th grade. But we never flirted until now. We used to flirt like alot. Ex: He would trip me, shut my locker, try to start a conversation, touch my hair, tease me and mock me. Everyone thought we liked each other even my teacher. One week ago we were talking and he said "i would never cheat on my wife" and my teacher was like "So you wouldnt cheat on (my name)?" But everytime someone says something like that we say "ewww" or he makes puking sound. But whenever i like some guy he says ther gay. But yesterday he asked out another girl and i got really pissed so i tryed to not talk to him but he would always try to start a conversation. Today i was talking to this girl that hooked up my crush with another girl and she said that he really didnt want to ask her out but she said if he didnt she would kick him in the . But this other girl said he kept texting her in cl. Im so confussed, am i a game to him??