$200 NL TPTK get raised

[StructureK]

villian is 21/13/2.8 fairly standard guy, we have not really been involved in any pots together. Im playing TAG, but very agro post flop.

No Limit Hold'em Cash Game - $1/$2 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $198.00
BB: $212.55
Hero (UTG): $213.00
MP: $197.00
CO: $197.00
BTN: $198.00

Preflop: Hero is dealt K[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/spade.gif[/img] (6 Players)
<font color="red">Hero raises to $7.00</font>, MP folds, CO calls $7.00, 3 folds

Flop: ($17) 3[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $12.00</font>, <font color="red">CO raises to $30.00</font>, Hero calls $18.00

Turn: ($77) 7[img]/images/graemlins/spade.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets $54.00</font>, Hero ??