10/20 Party. Weird River bet

[Cobretti]

10/20 Party. 6-handed

Villain Raises in UTG - he raises here 20% of the time
Hero 3-bets from Button with Q[img]/images/graemlins/heart.gif[/img]Q[img]/images/graemlins/diamond.gif[/img]
UTG calls. 2 to the flop

8[img]/images/graemlins/club.gif[/img]6[img]/images/graemlins/diamond.gif[/img]2[img]/images/graemlins/spade.gif[/img]
Villain checks. Hero Bets. Villain calls. Villain post flop aggressiveness is 1.75

turn: 3[img]/images/graemlins/club.gif[/img]
villain checks. Hero Bets. Villain calls

River: J[img]/images/graemlins/club.gif[/img]
villain bets. Hero?