Evil River

[bomblade]

20-40
I have black 99 EP. UTG limps, I limp, 1 MP limper, Cutoff and Button limp, SB folds, BB checks.
Flop JJ4..two hearts.
Checked to me, I bet. All three behind me cold call. Others fold.
Turn 9 heart (board JJ94, 3 hearts)
I bet, MP calls, Cutoff raises. Button contemplates for a minute, and then calls. I three bet. MP folds. Cutoff looks in the air, and reluctantly calls, button folds.
River is a 4. (board JJ944)
Cutoff is a weak player, very loose chaser. His reaction on the turn after I made it 120 wasn't him acting to try to throw me off.
What is my best move? Bet? Check and call? Check and fold?