77 on a paired flop

[Spurious]

Would someone play it differently?
I think i can't fold to his river bet, the pot is too big. Should i fold on the turn? I dont think he got an 8, maybe an overpair?

PokerStars No-Limit Hold'em, $0.10 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($17.25)
UTG ($8.30)
MP ($2.35)
CO ($17.30)
Button ($7.10)
Hero ($10.20)

Preflop: Hero is SB with 7[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, MP calls $0.10, <font color="#CC3333">CO raises to $0.3</font>, <font color="#666666">1 fold</font>, Hero calls $0.25, <font color="#666666">1 fold</font>, MP folds.

Flop: ($0.80) 8[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $0.6</font>, CO calls $0.60.

Turn: ($2) 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $1</font>, Hero calls $1.

River: ($4) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $1</font>, Hero calls $1.

Final Pot: $6