AA with monotone flop

Here's what I got on Villian1
VP$IP/PFR%/PFA Factor/WtSD%/# of hands
13.24%/4.41%/2.00/0%/68

I pegged him as a rock. This is the first flop I saw him bet and I never had the opportunity to see any of his hands. I felt uncomfortable so I laid it down, but I am not sure this is the correct line. How would you have played it? Should I've pushed? Raised more pre-flop? I am learning that my re-raises in a raised pot with callers tends to be on the small side.

Party Poker No-Limit Hold'em, $ BB (10 handed) FTR converter on zerodivide.cx

UTG ($87.50)
UTG+1 ($262.30)
UTG+2 Villian/ ($104)
MP1 Villian1/ ($126.40)
MP2 ($76.85)
MP3 ($200.25)
Hero ($90.85)
Button ($97.35)
SB ($175.95)
BB ($158.35)

Preflop: Hero is CO with A[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.50.
<font color="#666666">2 folds</font>, <font color="#CC3333">UTG+2 Villian/ raises to $4</font>, MP1 Villian1/ calls $4, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $10</font>, <font color="#666666">3 folds</font>, UTG+2 Villian/ calls $6, MP1 Villian1/ calls $6.

Flop: ($31.50) T[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Villian bets $20</font>, Villian1 folds, Hero folds.

Final Pot: $51.50

[xorbie]

Make it $16 or so preflop. I also push this flop, besides AK[img]/images/graemlins/club.gif[/img] or AQ[img]/images/graemlins/club.gif[/img] villain is likely a coinflip with you and could easily fold (I suppose TT is also possible, but might be outside of villain's UTG raising standards). His likely hand is overpair with or without a [img]/images/graemlins/club.gif[/img].

All morning I've been thinking along the same lines. He probably had KK, QQ, or AK, with a [img]/images/graemlins/club.gif[/img] mixed in there.

As I said, I am learning about my re-raises in a raised pot with caller. Please explain why I should have raised to $16 pre-flop.

[Morrek]

[ QUOTE ]
All morning I've been thinking along the same lines. He probably had KK, QQ, or AK, with a [img]/images/graemlins/club.gif[/img] mixed in there.

As I said, I am learning about my re-raises in a raised pot with caller. Please explain why I should have raised to $16 pre-flop.

[/ QUOTE ]

Because you don't want to give him great odds to catch a set(or whatever cracks your AA)
edit: and it's alot easier to just put the rest in on the flop if alot of your stacks came in preflop