Hand for Review: AA on the button

[Warik]

Can't help but think I screwed up the river here. Opponent just sat down a few hands ago so I don't know his tendencies.

On the river I fear I'm facing two pair or a donkstraight and he's looking to check-raise me because I've been so aggressive throughout the hand.

Thoughts?

Party Poker 3/6 Hold'em (6 max, 5 handed) converter

Preflop: Hero is Button with A[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img]. UTG posts a blind of $3.
UTG (poster) checks, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, UTG calls.

Flop: (5.33 SB) K[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets</font>, <font color="#CC3333">Hero raises</font>, UTG calls.

Turn: (4.66 BB) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets</font>, <font color="#CC3333">Hero raises</font>, UTG calls.

River: (8.66 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, Hero checks.

Final Pot: 8.66 BB

Did I miss a bet or was caution called for here?

Thanks.

[krishanleong]

bet the river.

Krishan

[clownshoes]

bet river

[mungpo]

You are losing money by not betting the river.

[Warik]

Opponent showed Q7o and I took the pot. I'll be sure to bet the river next time. (I assume of course that I call if I get check-raised, since I'll be getting over 11:1 on my call right?)

[Saborion]

Unless the duece helped him, wouldn't a two pair 3-bet most of the time, or possibly pull one of those wicked, bet-call, bet-call, bet-call lines?