5/10: oops. who did I just trap here? (AQs SB)

[paperboyNC]

CO is loose neutral 55/15/2 (VPIP/PFR/AGGR)

Empire Poker 5/10 Hold'em (7 handed) converter

Preflop: Hero is SB with A[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">CO raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">1 fold</font>, CO calls.

Flop: (7 SB) A[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets</font>, Hero calls.

Turn: (4.50 BB) A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">CO 3-bets</font>, Hero?

The CO and I had tangled the previous hand. He limped from the button, I raised from the BB and he folded the turn. I figured he'd think I was over-defending and I could extract extra bets by the check/call check/raise line. But then he 3bets.

Do I cap here and bet out an unimproved river? Call and bet the river? If he raises the river, do I 3bet?