Tricky Tricky

[vkotlyar]

10-20 Good game, and i know all the players very well. Tight player (TP) raise in EMP. Folded to the fishy small blind (FSB) who has never seen 2 cards he didnt like. I 3-bet from the SB w KK. Both call
Flop: 449r. FSB checks, i check, TP bets, FSB raises, I 3-bet, every1 calls. Turn: A. Checked to me and I bet. Both call. River: K FSB checks, I check, TP bets, FSB folds, I RAISE, and he 3-bets. I really wanted to fold. There was no doubt in my mind. I make the crying call and he shows me AA. Comments appreciated.
Vitaly