QQ vs aggro TAG

[Game_On]

Villian is 18/15. From what i've seen thus far hes been really aggro, once he raises, he playing for stacks. Don't know if this helps but I saw him call an utg raise from the button with a8spades and then raise a 675 (2hearts) flop and called a 3bet/ai overshove for full stacks

Full Tilt Poker - No Limit Hold'em Cash Game - $2/$4 Blinds - 5 Players -

SB: $396.00
BB: $332.00
UTG: $1,925.05
CO: $430.50
Hero (BTN): $494.40

Preflop: Hero is dealt Q[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/club.gif[/img] (5 Players)
UTG calls $4.00, <font color="red">CO raises to $18.00</font>, <font color="red">Hero raises to $62.00</font>, 3 folds, CO calls $44.00

Flop: ($134) 4[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] (2 Players)
CO checks,

Whats the standard here? Can I safely bet fold? If called am i just giving up on the hand?