NL600 TT passive

[$upermad4it]

Party Poker - No Limit Hold'em Cash Game - $3/$6 Blinds - 6 Players - (LegoPoker Hand History Converter)

Hero (SB): $594.00
BB: $1,007.85
UTG: $605.10
MP: $639.20
CO: $611.00
BTN: $538.00

Preflop: Hero is dealt T[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/club.gif[/img] (6 Players)
<font color="red">UTG raises to $24.00</font>, 3 folds, Hero calls $21.00, BB folds

Flop: ($54) 4[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">UTG bets $38.00</font>, Hero calls $38.00

Turn: ($130) 5[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, UTG checks

River: ($130) 6[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $88.00</font>, <font color="red">UTG raises to $240.00</font>, Hero folds

Pot Size: $458.00

Villian is grinsi who seems pretty decent playing 20/15. I often 3 bet pre but elected to play it passive this time. I'm wondering if I got bluffed off this pot because I wasn't representing a hand that could call this river reraise, or whether he just filled up on the river?