50NL River Call

[confusedandlost]

Did I make a mistake on calling this river? I thought villan was trying to bluff me as he either had a str8 or junk and I didn't think he would chase after a gutshot on the flop. I thought he was making a play. <font color="white"> </font>
Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 5 Players
LegoPoker Hand History Converter

BB: $63.50
UTG: $24.25
CO: $101.90
Hero (BTN): $118.45
SB: $53.15

Pre-Flop: J[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/spade.gif[/img] dealt to Hero (BTN)
UTG folds, CO calls $0.50, <font color="red">Hero raises to $2.25</font>, 2 folds, CO calls $1.75

Flop: ($5.25) 5[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/club.gif[/img] (2 Players)
CO checks, <font color="red">Hero bets $3</font>, <font color="red">CO raises to $8</font>, Hero calls $5

Turn: ($21.25) J[img]/images/graemlins/diamond.gif[/img] (2 Players)
CO checks, Hero checks

River: ($21.25) 3[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">CO bets $20</font>, Hero calls $20

Results: $61.25 Pot ($61.25 Rake)
CO showed 4[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/club.gif[/img] (a pair of Queens) and LOST (-$30.25 NET)
Hero mucked J[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/spade.gif[/img] and LOST (-$30.25 NET) <font color="red"> </font> <font color="white"> </font> <font color="white"> </font> <font color="white"> </font> <font color="white"> </font> <font color="white"> </font>