50NL AQ on a suited board

[Semtex]

First villain in this hand was a 45/5/1 calling station. Second villain I didn't have stats on but he was extremely passive. In a previous hand he called a raise preflop then a reraise from me with KK (I had AA), then ckeck-called/check-called all in on a board of low cards.

In this hand I put villain A on the flush draw and have no clue what villain B could have. What to do on the turn??

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP1 ($50)
MP2 ($55)
MP3 ($7.35)
Hero ($81.20)
Button ($29.55)
SB ($88.60)
BB ($50.55)
UTG ($10.25)
UTG+1 ($38.75)

Preflop: Hero is CO with A[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls $0.50, MP1 calls $0.50, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $3</font>, <font color="#666666">3 folds</font>, UTG+1 calls $2.50, MP1 calls $2.50.

Flop: ($9.75) 8[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+1 checks, <font color="#CC3333">MP1 bets $2</font>, <font color="#CC3333">Hero raises to $8</font>, UTG+1 calls $8, MP1 calls $6.

Turn: ($33.75) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+1 checks, MP1 checks, Hero ???