TPTK sandwiched between aggressors

[XmasXmas]

UTG+2 is on the slightly loose side of a tag. i'm not posting stats b/c he's playing differently than normal. him and a lag at the table have been talking and have a contest of sorts going on for who can win more pots. the other player is unknown.

please please please don't say fold pf.

Party Poker 2/4 Hold'em (10 handed)

MP2 with J[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img]. CO posts a blind of $2.
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#CC3333">UTG+2 raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">CO (poster) caps</font>, <font color="#666666">3 folds</font>, UTG+1 folds, UTG+2 calls, Hero calls.

Flop: (14.50 SB) 7[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">UTG+2 bets</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">CO 3-bets</font>, <font color="#CC3333">UTG+2 caps</font>, Hero ?