AQs line check

[BubbleMint]

Still early in my session, no great reads.
I have 3 bet MP3 twice now (this is the third time in less than 2 orbits), once he folded to my flop c bet, 2nd time he flat called flop, c/r turn and I passed overcards no draw.
I havent seen his cards at showdown yet,on the river I am sure I am ahead, but dont know if he calls a worse Ace if I v bet, so I check behind to get a look at what he is playing.

Full Tilt 3/6 Hold'em (9 handed) Full Tilt Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is CO with Q[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, MP2 calls, <font color="#CC3333">MP3 raises</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">2 folds</font>, BB calls, MP2 folds, MP3 calls.

Flop: (10.50 SB) 8[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, MP3 checks, <font color="#CC3333">Hero bets</font>, BB calls, MP3 calls.

Turn: (6.75 BB) 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, MP3 checks, Hero checks.

River: (6.75 BB) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, MP3 checks, Hero checks.

Final Pot: 6.75 BB