How's this fold?

[MicK412]

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

Preflop: Hero is BB with 9[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/club.gif[/img].
<font color="#666666">5 folds</font>, <font color="#CC3333">MP3 raises</font>, CO calls, <font color="#666666">1 fold</font>, SB calls, Hero calls.

Flop: (8 SB) 9[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP3 raises</font>, CO calls, SB folds, Hero calls.

Turn: (7 BB) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP3 checks, CO checks.

River: (7 BB) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">MP3 bets</font>, <font color="#CC3333">CO raises</font>, Hero folds, MP3 folds.

Final Pot: 10 BB



First orbit, normal bunch of loose fish on a normal Saturday night. Preflop, I didn't raise due to the number of people in the pot preflop, normal I would if it was heads up. I proceed to spike bottom set on a draw heavy board, so I bet out. Opponent raises as expected, so I wait for turn to checkraise. On the turn, opponent doesn't bet leaving me in a bind. River card sucks, I can't see how I'm ahead here, so I fold. Incorrect?