This is my 4th hand at the table and I didn't see anything unusual before this. How to play the flop?

PokerStars No-Limit Hold'em, $0.50 BB (7 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($46.15)
MP1 ($44.80)
MP2 ($6.30)
Hero ($101)
Button ($42.60)
SB ($49.50)
BB ($116.95)

Preflop: Hero is CO with 8, 8.
UTG calls $0.50, 1 fold, MP2 calls $0.50, Hero calls $0.50, Button raises to $1, 1 fold, BB calls $0.50, UTG calls $0.50, MP2 calls $0.50, Hero calls $0.50.

Flop: ($5.25) 3, T, 8 (5 players)
BB bets $13.5, UTG folds, MP2 calls $5.30 (All-In), Hero...???