Villain is 13.6/2.7/5.2 over 966 hands

I figured he would be more aggressive with a smaller pocket pair, trying to protect his hand. So I became very wary of his minbets (even though initially my plan was to check-raise him)

Party Poker No-Limit Hold'em, $ BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

saw flop|saw showdown

UTG ($591.95)
UTG+1 ($591)
UTG+2 ($516.45)
Hero ($720.14)
MP2 ($557.48)
MP3 ($738.15)
CO ($119.40)
Button ($582)
SB ($594)
BB ($507.30)

Preflop: Hero is MP1 with A, A. SB posts a blind of $3.
2 folds, UTG+2 calls $6, Hero raises to $24, 1 fold, MP3 calls $24, 4 folds, UTG+2 folds.

Flop: ($63) K, 2, 6 (2 players)
Hero checks, MP3 bets $6, Hero calls $6.

Turn: ($75) 5 (2 players)
Hero checks, MP3 bets $15, Hero calls $15.

River: ($105) 9 (2 players)
Hero checks, MP3 bets $65, Hero calls $65.

Final Pot: $235

Results in white below:
Hero has Ad As (one pair, aces).
MP3 has 6h 6c (three of a kind, sixes).
Outcome: MP3 wins $235.