20/40 with a moron

[marsvolta619]

Good 20/40 game. UTG is a loose passive with seemingly no knowledge of poker. SB is taggish who plays position.

I'm in BB with Jd9d

UTG limps, folded to SB who could be raising anything, I make it 3-bets to get the douche to fold his crap hand but he calls, button calls.

Flop: Js, 6h, 7h

SB bets out, I raise, UTG mutters and calls, SB calls.

Turn: 9c

SB checks, I bet, UTG raises, SB calls, I call

River: Kh

SB checks, I check, UTG shakes his head and says why not and bets, SB raises, I fold, UTG 3-bets, SB caps, UTG-calls.

Apart from preflop, where do I get away?