[gumpzilla]

The limp weak reraise, followed by a weak flop bet and 3 bet when he's raised, really seems very likely to be AA. KK he could play this way too, here, but since that would mean he has the two case kings that's pretty unlikely. I'd be very surprised if he shows something worse than AK here - I don't think he's playing JJ, QQ or any other K this way. I think you can fold this.

EDIT: Given his preflop action, I probably prefer leading out to c/r'ing the flop, because I think you'll get out cheaper when you're raised. Your line does make a fold even clearer, though, so I don't dislike it.