3/6 AA nasty board

[Kevinho_]

Party Poker No-Limit Hold'em, $6 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

Hero ($1)
BB ($866)
UTG ($711.60)
MP ($492.70)
Button ($600)

Preflop: Hero is SB with A[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $21</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $65</font>, <font color="#666666">1 fold</font>, MP calls $44.

Flop: ($136) 6[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $100</font>, MP calls $100.

Turn: ($336) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP bets $140</font>, Hero folds.

Final Pot: $336

good fold or suggestions how to play it? villain is SamDiamond (see him often at the tables) and has not too big of a stack