50NL, JJ has overpair in 4-way pot, flop is paired

[_TKO_]

I don't know where to cut off the action, so I'll just post the whole hand and maybe you can see where I went wrong.


Villains' stats (all over 46 hands):
SB: 40/4/1.2 (I've seen him slowplay AA all the way to the turn)
BB: 47/12/0.93
UTG: 78/8/1.3

Poker Stars - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $38.85
BB: $22.35
UTG: $152.05
<font color="black">Hero (MP): $50.45</font>
CO: $63.40
BTN: $16.75

<font color="black">Preflop:</font> Hero is dealt J[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/diamond.gif[/img] (6 Players)
UTG calls $0.50, <font color="red">Hero raises to $2</font>, 2 folds, SB calls $1.75, BB calls $1.50, UTG calls $1.50

<font color="black">Flop:</font> ($8) 5[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/heart.gif[/img] (4 Players)
<font color="red">SB bets $2</font>, BB calls $2, UTG calls $2, Hero calls $2

<font color="black">Turn:</font> ($16) 2[img]/images/graemlins/diamond.gif[/img] (4 Players)
<font color="red">SB bets $3.50</font>, BB calls $3.50, UTG calls $3.50, Hero calls $3.50

<font color="black">River:</font> ($30) A[img]/images/graemlins/spade.gif[/img] (4 Players)
SB checks, BB checks, <font color="red">UTG bets $5</font>, Hero folds