Funny river spot with 66, NL50

[ama0330]

Im playing without a HUD, so I don't have any stats. Me and villain have not tangled so far, this is early on in the session and he has been under my radar - I'm on 6 tables so I haven't noticed him.

Any thoughts?

Party Poker, $0.25/$0.50 NL Hold'em Cash Game, 5 Players
LeggoPoker.com - Hand History Converter

Hero (SB): $46.75
BB: $40.17
UTG: $48.94
CO: $59.22
BTN: $71.09

Pre-Flop: 6[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/spade.gif[/img] dealt to Hero (SB)
2 folds, <font color="red">BTN raises to $1.50</font>, Hero calls $1.25, BB calls $1

Flop: ($4.50) Q[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/heart.gif[/img] (3 Players)
Hero checks, BB checks, BTN checks

Turn: ($4.50) 4[img]/images/graemlins/heart.gif[/img] (3 Players)
Hero checks, <font color="red">BB bets $2.50</font>, BTN folds, Hero calls $2.50

River: ($9.50) Q[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, <font color="red">BB bets $10</font>