bad play or bad luck ?

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.05/$0.1 No-Limit Hold'em (8 handed)

Known players:
[tg]UTG2$17.66:///////;MP1$5.14:///////;MP2 (Hero)$3.65:///////;MP3$4.00:///////;CO$10.00:///////;BU$3.45:///////;SB$10.00:///////;BB$10.60:///////;[/tg]

Preflop: Hero is MP2 with 2:d, 2:c.
UTG2 folds, MP1 calls $0.10, Hero calls $0.10, MP3 folds, CO raises to $0.40, 3 folds, MP1 calls $0.30, Hero calls $0.30.

Flop: ($1.35) 3:s, 5:d, 5:s (3 players)
MP1 checks, Hero checks, CO checks.

Turn: ($1.35) 2:h (3 players)
MP1 bets $0.60, Hero calls $0.60, CO folds.

River: ($2.55) T:c (2 players)
MP1 bets $0.90, Hero raises to $2.65(All-In), MP1 calls $1.75.

Final Pot: $7.85.
Results follow:

Hero shows a full-house, twos full of fives(2:d 2:c).
MP1 shows a full-house, tens full of fives(T:d T:s).

MP1 wins with a full-house, tens full of fives(T:d T:s).