Auto 3 bet?

[lil']

CO liked to raise with anything decent. His limp means he probably has some crappy suited junk that he should probably have folded. My image is rock tight at this point, and I really thought the blinds would fold (I was wrong.)

Party Poker 15/30 Hold'em (6 handed)

Preflop: lil' is Button with A[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/spade.gif[/img].
<font color="666666">2 folds</font>, CO calls, <font color="CC3333">lil' raises</font>, SB calls, BB calls, CO calls.

Flop: (8 SB) 2[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="blue">(4 players)</font>
SB checks, BB checks, CO checks, <font color="CC3333">lil' bets</font>, SB folds, BB folds, <font color="CC3333">CO raises</font>, lil' calls.

I really think there is an excellent chance he has 2 random suited cards here. Is this an auto 3 bet?

Turn: (6 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">CO bets</font>, lil' calls.

River: (8 BB) 5[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players)</font>
CO checks, <font color="CC3333">lil' bets</font>, CO calls.

Final Pot: 10 BB
<font color="green">Main Pot: 10 BB, between CO and lil'.</font> &gt; <font color="white">Pot won by lil' (10 BB).</font>

Results in white below: <font color="white">
CO shows Ks 5s (two pair, fives and twos).
lil' shows Ac 3s (two pair, aces and twos).
Outcome: lil' wins 10 BB. </font>