NL100 - Overplayed my hand? [set on a scary river]

[Kinbor]

guy was 52/6/0.3 and i knew he is going to check his Ax or whatever, but I also knew flushdraws are probably big part of his range. what to do? c/f, because he is never bluffing?

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG ($74.05)
MP ($73.75)
Hero ($121.90)
Button ($124.45)
SB ($99)
BB ($109.40)

Preflop: Hero is CO with 6[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $3.5</font>, Button calls $3.50, <font color="#666666">1 fold</font>, BB calls $2.50.

Flop: ($11) A[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets $8</font>, Button calls $8, BB folds.

Turn: ($27) T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $25</font>, Button calls $25.

River: ($77) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $85.4 (All-In)</font>, Button calls $85.40.

Final Pot: $247.80