KK with paired board and possible straight

[MiguelSanchez]

SB is LAG, 65/30/1.75, after 200 hands
UTG+1 is passive pre and post flop, VPIP=33, 70 hands. He has beat me out of at least 3 pots where he slow-played trips or a straight on the flop, then raised the turn.



Party Poker 1/2 Hold'em (8 handed) converter

Preflop: Hero is BB with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">4 folds</font>, SB completes, <font color="#CC3333">Hero raises</font>, UTG+1 calls, SB calls.

Flop: (6 SB) 6[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG+1 calls, SB calls.

Turn: (4.50 BB) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG+1 raises</font>, <font color="#CC3333">SB 3-bets</font>, Hero ...?