River decision 10/20 set on Party

[sapster]

Haven't played much in this game, whenever I take a shot I seem to run unbelievably bad or just tilt away some money. Only Hand I played with villain was limped pot where I had jts on button 789 2 diamonds flop, he bet out from blinds got a call I juiced it up he called then check folded turn blank.
I have 2k villain has me covered my hand is 55.

Hero raises [$70].
Villain calls [$70].
xxxxxx folds.
xxxxxx folds.
xxxxxx folds.
xxxxxx folds.
** Dealing Flop ** [ Kd, 5h, 8d ]

Hero bets [$150].
Villain calls [$150].
** Dealing Turn ** [ 9h ]
Hero bets [$400].
Villain calls [$400].
** Dealing River ** [ 3d ]

Hero...?