Turn pairs middle card

[rannerboy]

Just played this hand at Party 50 NL 6-max. Only read I have on Villain is that he seems quite weak and often makes small bets. Comments and critique on all streets welcome.

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) FTR converter on zerodivide.cx

Hero ($69.30)
SB ($44.45)
BB ($49.50)
UTG ($102.87)
MP ($32.35)
CO ($65.90)

Preflop: Hero is Button with K[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $0.25.
UTG calls $0.50, <font color="#666666">1 fold</font>, CO calls $0.50, <font color="#CC3333">Hero raises to $2</font>, SB (poster) calls $1.75, <font color="#666666">1 fold</font>, UTG folds, CO calls $1.50.

Flop: ($7) 5[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets $4</font>, CO folds, <font color="#CC3333">Hero raises to $10</font>, SB calls $6.

Hmm... he bets into two players including the pf raiser. As said, he seems weak so I do believe he has something on this almost drawless board. Should I just call here? Raise more?

Turn: ($27) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $10</font>, Hero calls $10.

Very suspicious bet. I think he would check if that card really helped him.

River: ($47) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

Should I bet here?

Final Pot: $47