Bad play or bad luck?

Villain is a 36/7/1.0 @ 55 hands. I tend to think that this is bad luck, but I could have smoothed the flop when he raises me. However, this kinda of crap has been happening to me lately. He hits his 2 outter on the river...

Full Tilt No-Limit Hold'em, $0.10 BB (8 handed) - Full-Tilt Converter Tool from http://www.flopturnriver.com

Button ($10)
Hero (SB) ($11.90)
BB ($7.76)
UTG ($12.12)
UTG+1 ($15.39)
MP1 ($13.99)
MP2 ($28.44)
CO ($5.91)

Preflop: Hero is SB with Ad, Kd
UTG calls $0.10, UTG+1 calls $0.10, 1 fold, MP2 bets $0.40, 2 folds, Hero raises to $1.10, 3 folds, MP2 calls $0.70

Flop: ($2.50) 9h, Ks, 8d (2 players)
Hero bets $1.75, MP2 raises to $4.40, Hero raises to $10.80 (All-In), MP2 calls $6.40

Turn: ($24.10) Kh (2 players, 1 all-in)

River: ($24.10) 7h (2 players, 1 all-in)

Total pot: $24.10 | Rake: $1.60

Results:
Hero had Ad, Kd (three of a kind, Kings).
MP2 had 7d, 7s (full house, sevens over Kings).
Outcome: MP2 won $22.50

ARGHHHHH!!!!