JJ w/ two Kings on the board

Party Poker No-Limit Hold'em, $ BB (10 handed) FTR converter on zerodivide.cx

MP2 ($25.70)
MP3 ($4.10)
CO ($22.05)
Button ($41.90)
SB ($29.05)
BB ($26.80)
Hero ($28.70)
UTG+1 ($7.90)
UTG+2 ($14.89)
MP1 ($95.60)

Preflop: Hero is UTG with J[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $0.10.
<font color="#CC3333">Hero raises to $1.49</font>, <font color="#666666">2 folds</font>, MP1 calls $1.49, <font color="#666666">6 folds</font>.

Flop: ($3.33) K[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP1 bets $2</font>, <font color="#CC3333">Hero raises to $6</font>, MP1 calls $4.

Turn: ($15.33) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP1 bets $5</font>, Hero folds.

Final Pot: $20.33

NOTE: OPPONENT IS LOOSE-AGGRESSIVE/PASSIVE

[hockeyf]

Terrible fold against the average 25NL player, just call him and call any decent river card unless its a big bet.

If my opponent is passive post flop doens't the fact that he is betting scream he probably has that king?

[swolfe]

why did you check-raise the flop?