AQ - 2pair on river facing shove

[HY77]

Party Poker, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

SB: $2.75
BB: $15.82
UTG: $39.08
Hero (MP): $48.57
CO: $71.48
BTN: $34.96

Pre-Flop: Q[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/heart.gif[/img] dealt to Hero (MP)
UTG folds, <font color="red">Hero raises to $2</font>, CO folds, BTN calls $2, 2 folds

Flop: ($4.75) A[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">Hero bets $3</font>, <font color="red">BTN raises to $6</font>, Hero calls $3

Turn: ($16.75) 3[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $3.50</font>, Hero calls $3.50

River: ($23.75) Q[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $23.46 and is All-In</font>, Hero calls $23.46

After he reraised the flop, I was hoping to get a cheap showdown. Normally I'd fold here, but I think a that's a leak in my game (when people put all-in pressure on me I fold almost everything). Is my play alright?
He wasn't at the table long so I don't have any reads.