[NL10] KK on paired flop

[cplilqw]

Villain is 61.29/12.9/2 over 31 hands and I have been running about 15.25/12.93/1.83. What would be the best play in this situation?

Full Tilt Poker - No Limit Hold'em Cash Game - $0.05/$0.10 Blinds - 6 Players - (LegoPoker HH Converter)

Hero (SB): $9.90
BB: $9.80
UTG: $9.95
MP: $18.65
CO: $6.30
BTN: $9.00

Preflop: Hero is dealt K[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/spade.gif[/img] (6 Players)
2 folds, CO calls $0.10, BTN folds, <font color="red">Hero raises to $0.50</font>, BB calls $0.40, CO folds

Flop: ($1.10) 8[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero...?