67s flops bottom 2, river puke

[AZplaya]

Villian is 53/12, standard fish. I think this is just a standard [censored] hand, but want to make sure. I'm pot commited on this river but I gotta fold, right?

Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

CO: $44.35
Hero (BTN): $48
SB: $53.20
BB: $18
UTG: $47.70
MP: $39.35

Pre-Flop: 6[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/spade.gif[/img] dealt to Hero (BTN)
UTG calls $0.50, MP folds, CO calls $0.50, Hero calls $0.50, SB folds, BB checks

Flop: ($2.25) 8[img]/images/graemlins/heart.gif[/img] 6[img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] (4 Players)
BB checks, UTG checks, <font color="red">CO bets $2.25</font>, <font color="red">Hero raises to $8</font>, 2 folds, CO calls $5.75

Turn: ($18.25) A[img]/images/graemlins/spade.gif[/img] (2 Players)
CO checks, <font color="red">Hero bets $13</font>, CO calls $13

River: ($44.25) 9[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">CO bets $22.85 and is All-In</font>, Hero folds

Results: $44.25 Pot ($2.20 Rake)
CO mucked and WON $42.05 (+$20.55 NET)