River makes low two pair but completes flush
 

Villain is 55/22/1.8

I didn't Cbet the flop because he's been playing back at me a lot with CR's and never seems to fold to my Cbets. I feel that I'm ahead on the turn (probably should have raised). Is this an easy call on the river?

Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LeggoPoker Hand History Converter

BB: $56.25
UTG: $149.30
MP: $50.70
Hero (CO): $49.60
BTN: $116.80
SB: $66.55

Pre-Flop: 6[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] dealt to Hero (CO)
2 folds, <font color="red">Hero raises to $1.75</font>, BTN folds, SB calls $1.50, BB folds

Flop: ($4) 8[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/spade.gif[/img] (2 Players)
SB checks, Hero checks

Turn: ($4) 2[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">SB bets $4</font>, Hero calls $4

River: ($12) 6[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">SB bets $12</font>, Hero?

Re: River makes low two pair but completes flush
 

call all day every day

If villain is that aggressive you should be tightening your opening range and let him play back at you with a stronger range.