Afraid of the Nuts

So I was playing 20/40 at Oceans-11 on Thursday night when the following hand came up.

I had pocket kings UTG+1, and I raised. Roc, a very aggressive player, who usually plays in the bigger games in LA, like 100/200 or bigger, was slumming in the 20/40 game. He 3-bets me before the flop, we get 1 or 2 other callers and I just call pre-flop. At this point Roc could have a wide range of hands, from any pocket pair, ace-face, king-queen, etc. Flop comes 10, 10, Jack. I check-raise Roc, on the flop, and he 3-bets me. Turn is a rag, and I check raise Roc again, and again he 3-bets the turn. River comes a king, giving me second nuts. I check-raise rock on the river again, and again he 3 bets me. I 4-bet, he 5-bets, I 6-bet, he 7-bets. What to do now? On the river, I know that he has either pocket tens or pocket jacks. For either the nuts or 3rd nut. I just call, half expecting him to show me quads. He shows me pocket jacks and I drag the pot.