villain is 34/26 over 100ish hands
I don't have reads because I'm going over old hand histories and I don't remember him

I think flop/turn are super standard because there is a lot of distrust in these spots
so my question is of course whether only better calls on the river
I probably expect him to slowplay better hands, but then again is he really folding AA/AK if he gets to the river?

Full Tilt No-Limit Hold'em, $1.00 BB (4 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

SB ($100)
Hero (BB) ($114.05)
UTG ($101.70)
Button ($147.20)

Preflop: Hero is BB with 6, 7
1 fold, Button bets $3.50, 1 fold, Hero calls $2.50

Flop: ($7.50) 7, K, 7 (2 players)
Hero checks, Button bets $4, Hero raises to $12, Button calls $8

Turn: ($31.50) 8 (2 players)
Hero bets $29, Button calls $29

River: ($89.50) 8 (2 players)
Hero bets $69.55 (All-In), Button calls $69.55

Total pot: $228.60 | Rake: $2