Is he flirting or not?

Ok so we had been texting each other and we but said we liked each other. But the we get to school and he acts like i dont eisist. And is fliring with my best friend. Im shy and i dont flirt unless you flirt first. But my best friends not like that. So I talked to her and she said she was sorry and blah blah. So today we were in art cl and i was leanin over a table and he grabbed my *** an said "damn id tap that, if you will let me". And of course idc. And no im not a . So we were walkin back from art and he tried to trip me so i punched him. And he was like "damn you can hit, to bad aint getting to hit that", But i told him he could punch me back so he did but i didnt hurt. So i told him he hits like a girl and he said "ok idc, will you give me a hug" so i did. Then after lunch we were coming back in and him and his friend were right behind me and my friend an his friend grabbed her ***, and he like shoved his fingers in my ***. It was wierd. But is he flirting or not?