Full Tilt, $0.10/$0.25 No Limit Hold'em Cash, 6 Players

MP: $33.46 (133.8 bb)
CO: $43.74 (175 bb)
BTN: $25 (100 bb)
SB: $33.48 (133.9 bb)
Hero (BB): $25.68 (102.7 bb)
UTG: $26.67 (106.7 bb)

Preflop: Hero is BB with Q K
UTG folds, MP raises to $0.75, CO folds, BTN calls $0.75, SB folds, Hero calls $0.50

Flop: ($2.35) 6 K J (3 players)
Hero bets $2, MP raises to $32.71 and is all-in, 2 folds

Results: $6.35 pot ($0.31 rake)
Final Board: 6 K J
MP mucked and won $6.04 ($3.29 net)
BTN mucked and lost (-$0.75 net)
Hero mucked Q K and lost (-$2.75 net)

MP was a bit loose. Would you have bet the flop? Should I have called his allin?