This looks so much like 77 or a set, no?
I tried a blocking bet on the river, but I think its super spewy now...
Comments on all streets, ty.

Full Tilt Poker
$3/$6 No Limit Hold'em Ring Game
6 Players
LegoPoker Hand Converter

[color:black]Stack Sizes[/color]
MP: $1294.75
Hero (CO): $643.25
BTN: $591
SB: $582
BB: $358.5
UTG: $110.65

[color:black]Preflop:[/color] J J ($9, 6 players)
UTG folds, MP folds, [color:red]Hero raises to $21[/color], BTN calls $21, SB folds, BB folds

[color:black]Flop:[/color] 8 5 6 ($51, 2 players)
[color:red]Hero bets $40[/color], [color:red]BTN raises to $135[/color], Hero calls $95

[color:black]Turn:[/color] 8 5 6 [3] ($321, 2 players)
Hero checks, BTN checks

[color:black]River:[/color] 8 5 6 3 [4] ($321, 2 players)
[color:red]Hero bets $125[/color], [color:red]BTN raises all in to $435[/color], Hero folds
Uncalled bet of $310 returned to BTN