I wanted to give up the hand when I missed the flop, but when he checked behind it felt like he was waving the white flag too. I bet for protection, but when I reviewed this hand I wasn't sure; he might be slowplaying a big hand or call a turnbet with overcards, and I'd have to fold to just any agression at all.
PokerStars - $0.05 NL FAST (6 max) - Holdem - 6 players
BTN: 253.2 BB (VPIP: 12.50, PFR: 12.50, 3Bet Preflop: 0.00, Hands: 16)
Hero (BB): 135.4 BB
SB posts SB 0.4 BB,
Hero posts BB 1 BB
Pre Flop: (pot: 1.4 BB) Hero has 5

5
fold,
fold,
fold,
BTN raises to 3 BB,
fold,
Hero calls 2 BB
Flop: (6.4 BB, 2 players) 3

7

8
Hero checks, BTN checks
Turn: (6.4 BB, 2 players) 4
Hero bets 4 BB,
fold