WCOOP ME - Boat's sailing on flush river. check or bet???

[NYWalker]

WCOOP ME
Blinds 400/800/50.

UTG+1 limps, hero limp MP with A[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/club.gif[/img] villain limps from CO, SB, BB completes.

5 players Pot 4450.

Flop 8[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/heart.gif[/img]

UTG+1 bets 800, Hero raise to 3800. (Hero 55K), villain (41K) smooth calls. All others fold.

2 players, pot 12850.

Turn A[img]/images/graemlins/spade.gif[/img]

Hero bet 5500, villain calls.

2 players Pot 23850.

River 5[img]/images/graemlins/heart.gif[/img]

Hero???

(villain has 32K behind)