Two pair too scared?

[JKetzer]

The subject's a near-rhyme, but how bad is my line?
The flop is okay, but I do say
My hand is weak. So I am meek
And call the flop, and the turn I shall pop.

The turn brings a nine, which for me is fine
But villian three-bets; oh, what a mess.
A set, his play fits. Who else fears trips?
Shall I cap this turn? Or will I get burned?

Party Poker 1/2 Hold'em (10 handed) converter

Preflop: Hero is MP2 with K[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img]. Hero posts a blind of $1.
UTG calls, UTG+1 calls, UTG+2 calls, <font color="#666666">1 fold</font>, Hero (poster) checks, <font color="#666666">3 folds</font>, SB completes, BB checks.

Flop: (6 SB) J[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, UTG calls, UTG+1 folds, UTG+2 calls, Hero calls, SB folds.

Turn: (5 BB) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">BB bets</font>, UTG folds, UTG+2 calls, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">BB 3-bets</font>, UTG+2 calls, Hero calls.

River: (14 BB) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets</font>, UTG+2 folds, Hero calls.

Final Pot: 16 BB