He called your UTG raise from UTG+1, so it's unlikely he has a 2 in his hand. This is most likely a lower pocket pair or AT or something. I guess it's possible your beat by TT, 22 or a slowplayed AA, KK. But I'm willing to pay that off. This is a great flop for your hand, I'm felting this, especially with only $17 effective stacks.

I like a 3-bet on the flop here, or maybe just call and c/r all in on the turn, if you think he'll fire again,