Turned Trips but the Other Guy Keeps Betting

[Harv72b]

Reads are crucial in this hand, so don't just skim the following paragraphs. [img]/images/graemlins/tongue.gif[/img]

The table in general ain't so great, and is playing pretty tight and aggressive (although you can't tell from this hand). I'm doing what I do too often--sticking it out for a few more orbits after getting stuck early (chasing losses--I am teh suck). MP2 (the villain) is 16/9/5 over a 100 hand sample; I don't have any notes on him, which means he hasn't done anything unusual over that span. UTG+1 is a solid TAG from several hundred hands; if he's limping from EP on this table, he's either got a medium pocket pair or suited paint. The other players don't matter in this hand, although SB being the lone donk at the table (65/7 over ~50 hands) factored into my decision to limp behind preflop.

Two hands prior I had 3-bet an MP3 openraise from the button with KJs, and been capped by the SB. Both of us called, and SB led at an AJX flop, MP3 folded, I called, called his bet when I turned trip jacks, and only raised after spiking quads on the river (he made a pretty bad crying call with KK). I mention that hand because it was undoubtedly still fresh in the minds of everyone at the table, and is obviously the opposite strategy from what I used here.

Party Poker 5/10 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is MP3 with 6[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">2 folds</font>, MP2 calls, Hero calls, CO calls, Button calls, SB completes, BB checks.

Flop: (7 SB) 6[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(7 players)</font>
SB checks, BB checks, UTG+1 checks, <font color="#CC3333">MP2 bets</font>, Hero calls, CO folds, Button folds, SB folds, BB folds, UTG+1 calls.

Turn: (5 BB) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+1 checks, <font color="#CC3333">MP2 bets</font>, <font color="#CC3333">Hero raises</font>, UTG+1 folds, <font color="#CC3333">MP2 3-bets</font>, <font color="#CC3333">Hero caps</font>, MP2 calls.

River: (13 BB) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP2 bets</font>, Hero...?

Call or raise? And if we're 3-bet after raising?