KK vs paired board + aggression

[caggin]

I felt very very lost with this hand.
Villain is (52/11/.87) over 28 hands.

Party Poker 0.5/1 Hold'em (9 handed) converter

Preflop: Hero is MP1 with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">CO 3-bets</font>, <font color="#666666">3 folds</font>, UTG+1 calls, <font color="#CC3333">Hero caps</font>, CO calls, UTG+1 calls.

Flop: (13.50 SB) J[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+1 checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">CO raises</font>, UTG+1 calls, <font color="#CC3333">Hero 3-bets</font>, <font color="#CC3333">CO caps</font>, UTG+1 calls, Hero calls.

<font color="green">How's the 3-bet? Too much, or ok? I don't think CO has the J, but UTG+1 calling along is starting to worry me.</font>

Turn: (12.75 BB) A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+1 checks, Hero checks, <font color="#CC3333">CO bets</font>, UTG+1 calls, Hero calls.

<font color="green">Ugh. Don't like the A. UTG+1 not raising makes me think no one has the J, but someone's gotta have the A, right? Or am I against smaller pocket pairs? What to do: give up now, raise, or should I have bet out? </font>

River: (15.75 BB) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+1 checks, Hero checks, <font color="#CC3333">CO bets</font>, UTG+1 calls, Hero calls.

<font color="green">I think I'm beat, but can't fold to 1 bet. </font>
Final Pot: 18.75 BB

[toss]

I fold seeing how villain has aggro factor of .87

[shadow29]

fold the turn

[AngelicPenguin]

Villain is pretty aggressive PF, so AK or AJ seem like possible holdings, as do AA/QQ. I agree with your flop play; I'm not ready to give villain a J here. The turn is terrible for you. I'm pretty sure you're beat here. I'd probably lay it down. I'd be afraid of a checkraise from UTG+1, waiting with his any A. I'm just not sure if you can call off two big bets in this hand (esp if you don't know that's all there is); I don't think we're good here enough.