Hand converted with online PokerStrategy.com hand converter:
$0.02/$0.04 Fixed-Limit Hold'em (8 handed)
Preflop: Hero is BB with 5:h, A:h.
4 folds, CO calls, BU folds, SB calls, Hero raises, CO calls, SB 3-Bets, Hero calls, CO calls.
Flop: (9 SB) 5:d, 3:h, 9:d (3 players)
SB checks, Hero bets, CO folds, SB raises, Hero 3-Bets, SB caps, Hero folds, SB gets uncalled bet back.
Final Pot: 6 BB.
I couldn't figure out what he had considering his aggression, but I folded, because I had only mid pair.