100NL - TPWK against bluff-happy villain

[spivey]

Full Tilt Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $119.15
BB: $45.40
UTG: $40.00
MP: $221.65
Hero (CO): $100.00
BTN: $175.80

UTG posts $1.00
Preflop: Hero is dealt A[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/spade.gif[/img] (6 Players)
UTG checks, MP folds, Hero raises to $4.50, BTN folds, SB calls $4.00, 2 folds

Flop: ($11) 6[img]/images/graemlins/heart.gif[/img] A T (2 Players)
SB checks, Hero checks

Turn: ($11) 5 (2 Players)
SB bets $11.00, Hero calls $11.00

River: ($33) J (2 Players)
SB bets all-in for $103.65, Hero?


I know this is read dependent, but IMO it's a tough spot and wondering how people normally handle this type of situation against bluff happy idiots. I had played with villain for ~30-45 minutes on a couple of tables and he was definitely bluffing a lot.

Villain's (endoftime7T, if anyone has played with him) stats at the time were around 40/30/2.5 over 100 hands, went to showdown 30% of the time, won 30% of the time. This was the first time he overbet. I checked flop so I could let him PSB bluff on turn and river and would call. I presume he probably put me on like KK/QQ. We didn't have any special history.