Villain is 55/3/2,8 over 70 hands. He both calls and bets a lot.

Party Poker No-Limit Hold'em, $ BB (6 handed) from (Format: Bet The Pot)

saw flop|saw showdown

MP ($445.25)
Hero ($291.85)
Button ($201.10)
SB ($159.95)
BB ($227.80)
UTG ($353.80)

Preflop: Hero is CO with , . SB posts a blind of $1.
2 folds, Hero raises to $8, 1 fold, SB (poster) calls $7, 1 fold.

Flop: ($18) , , (2 players)
SB checks, Hero bets $12, SB calls $12.

Turn: ($42) (2 players)
SB checks, Hero bets $30, SB calls $30.

River: ($102) (2 players)
SB checks
Hero?

I think Id bet the river about $50-60. If he had the flush I dont think he would have checked the river hoping you bet. He probably has the A or K of hearts. If he has the K of hearts he may call a river bet. If he pushed I think i might call someone with those stats

i would bet 70 and fold to a CR

After seeing stack sizes, I change my mind. I push the river.

Results:

River: ($102) (2 players)
SB checks, Hero bets $70, SB raise $119.95 (All-In), Hero calls $39.95.

Final Pot: $321.90
Results:
SB has 7h Jh (flush, jack high).
Hero has Qh Kd (two pair, kings and queens).
Outcome: SB wins $321.90.

So the donk floped a flush and slowplayed it. I'm always feeling stupid paying off slowplayers when I'm hitting on turn/river.

I think (like Iceman mentioned) checking the turn might be the right thing to do for three reasons:

1) At the turn my hand is not very strong, so I want to keep the pot small. If I'm checking the turn I can call his riverbet or, if he checks, bet the river myself and fold to a CRAI.
2) I might also induse a river bluff by checking the turn.
3) I'm not to worried to give a free card because it might be me who is drawing

Am I being result orientated here?