NL25 AQ - standard bet from Hero in button faces big raise from BB

[automaton_22]

Villain is TAGish over a small sample. History is that I have stolen the blinds from the button around 3 of the last 4 rotations. I suspect he is making a move, raising light. Your thoughts? Is AQ too light a holding for my aggro 3bet?

Party Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
4 players
Converter

Stack sizes:
UTG: $18.10
Hero: $35.05
SB: $17.35
BB: $38.95

Pre-flop: (4 players) Hero is Button with A[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/spade.gif[/img]
UTG folds, <font color="#cc0000">Hero raises to $1</font>, SB calls, <font color="#cc0000">BB raises to $5</font>, <font color="#cc0000">Hero raises to $18</font>.