AQ - river 2 pairs, but feel gross

[cs3]

<font color="blue"> villain is fairly unknown and has only been at the table for 6-7 orbits. seems donkish though becasue he limp/calls a lot PF and has showdown hands like K2s from UTG. has been a passive/stationy so far

im playing TAGish and v aggro, but villain probably just thinks i raise i raise too much PF </font>

Poker Stars
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

Stack sizes:
UTG: $73
Hero: $157
Button: $96.90
SB: $64.50
BB: $103.65

Pre-flop: (5 players) Hero is CO with A[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/club.gif[/img]
UTG folds, <font color="#cc0000">Hero raises to $4</font>, Button calls, 2 folds.

Flop: A[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/club.gif[/img] ($9.5, 2 players)
<font color="#cc0000">Hero bets $6</font>, <font color="#cc0000">Button raises to $13</font>, Hero calls.
<font color="blue">ya, i know i can bet flop harder. call teh raise? </font>

Turn: 4[img]/images/graemlins/club.gif[/img] ($35.5, 2 players)
Hero checks, <font color="#cc0000">Button bets $20</font>, Hero calls.
<font color="blue"> i dont know what the best line is here, but i didnt call the flop planning to fold to his inevitable turn bet, right?</font>

River: Q[img]/images/graemlins/heart.gif[/img] ($75.5, 2 players)
<font color="blue">did that Q really improve my hand? and whats the line here?
open shove?
check/shove?
check/fold? </font>