10NL KK river decision

[xxrod17xx]

Full Tilt Poker - No Limit Hold'em Cash Game - $0.05/$0.10 Blinds - 8 Players - (LegoPoker Hand History Converter)

Villan is a 23/7/2...he just sat down and posted. He snap called every street which lead me to believe that he was on the flush draw here.

Hero (SB): $10.40
BB: $3.85
UTG: $15.35
UTG+1: $5.45
MP1: $11.05
MP2: $3.85
CO: $10.00
BTN: $1.50

CO posts $0.10
Preflop: Hero is dealt K[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/diamond.gif[/img] (8 Players)
4 folds, CO checks, BTN folds, <font color="red">Hero raises to $0.50</font>, BB folds, CO calls $0.40

Flop: ($1.10) 6[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">Hero bets $1.00</font>, CO calls $1.00

Turn: ($3.10) 5[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $2.25</font>, CO calls $2.25

River: ($7.60) A[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero????