I was playing pool (billiards) in the student lounge at my school. Someone I've known for a while who comes up and tries to take my pool stick after I lose. I tell him no, and that I'm trying to practice. He tells me I already lost and to let him have a go at it. I repeatedly told him no and to get off my back, and asked him what he thought he was doing. After maybe the third or fourth interaction, he comes behind me, picks me up in a bear hug and slams me on the ground, fucking up my shoulder and already-injured knee. He says "Don't give me attitude, asking me who I think I am." I picked myself up quickly because I was with a large friend group and a girl I'm trying to get with. I sat down and didn't say anything for 10 mins, and my friends and the girl walked out. Then I walked out 5 mins later as he was saying "Wait, I need to apologize."

If he tries to interact with me again, I'll just say "We're not friends. Fuck off."

This was yesterday. I couldn't fight him, he was a former wrestler with at least 40 pounds on me.

I already nexted the girl because she probably thinks I'm a pussy now.

The fuck was I supposed to do?

Edit: There was an open table 5 meters away.