No-Limit Hold'em, $1.00 BB (4 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

BB ($108.50)
UTG ($140.35)
Hero (Button) ($100)
SB ($104.05)

Preflop: Hero is Button with K, K
1 fold, Hero raises $4, SB raises $13, 1 fold, Hero calls $9.50

Flop: ($28) 8, 5, J (2 players)
SB checks, Hero bets $15, SB calls $15

Turn: ($58) Q (2 players)
SB bets $30, Hero folds

villain was 18/9/1.5 (over 700 hands) 3bet 2.8%
What do you do here?