KK and I made a flush

[Nemesis69]

I just sat down, so no reads on Villian.

Game:
6MAX 0.01/0.02

Stacks:
SB = Hero ($5.03)
BB($1.96)
UTG ($1.86)
MP (&4.20)
Button = Villian ($4.83)

Preflop:
Hero is dealt K[img]/images/graemlins/heart.gif[/img]K[img]/images/graemlins/club.gif[/img]
UTG folds, MP limps, Button limps, Hero makes it $0.10
MP folds, Button calls.

Flop (pot: $0.24)

6[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/club.gif[/img]

Villian checks, Hero bets $0.16, Villian calls

<font color="red">Good flop for me. He might have hit a queen or a flush draw.</font>

Turn (pot: $0.56)

2[img]/images/graemlins/club.gif[/img]

Villian checks, Hero bets $0.40, Villian calls

<font color="red">The flushcard comes and I bet again. Now he flatcalls again. Wtf is he setting a trap?</font>

River (pot: $1.46)
4[img]/images/graemlins/club.gif[/img]

Villian bets $0.50, Hero??

<font color="red">Is a call with the second nuts OK or am I missing value here? The way villian played the hand/the betsize got me confused a bit.</font>