Bluffing in 3-bet pot

[Laetus]

Villain is playing 29/21/2.8 and I'm playing TAG. He seems to 3-bet a bit, but I dunno how he plays in 3-bet pots in general. Plan was to flop a gut-shoot or better and get it in (i.e. flop K52 and I'm all-in!). That didn't happen... but it looks like he has air a decent amount of the time. What do you think about river bet? My original plan?

Everest Poker No-Limit Hold'em, $2.00/$4.00 (HH Converter by Kreatief)

($462.60)
($214.50)
($461.20) (Hero)
SB ($486.90)
BB ($444.30)

Preflop: Hero is with 6[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img]
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $14.00</font>, <font color="#CC3333">BUTTON raises to $48.00</font>, <font color="#666666">2 folds</font>, Hero calls $34.00,

Flop: 2[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img] ( $102 )
Hero checks, BUTTON checks,

Turn: K[img]/images/graemlins/club.gif[/img] ( $102 )
Hero checks, BUTTON checks,

River: J[img]/images/graemlins/diamond.gif[/img] ( $102 )
<font color="#CC3333">Hero bets $65.00</font>