Flopped a set, but wait now theres a three flush.

[bunky9590]

This hand has been bugging me all day (and all last night).

Full Tilt Poker 2/4 NLHE.
7 handed. Relevent stacks are villain in the SB with 660.
Bunky is CO with 480. Paul Wolfe is on my immediate right.

Preflop: Folded to Paul wolfe who raises to 12. Bunky cold calls with 8 [img]/images/graemlins/diamond.gif[/img] 8 [img]/images/graemlins/spade.gif[/img]. Loose SB calls, BB calls (no read).

Flop (48.00)
A [img]/images/graemlins/diamond.gif[/img] 8 [img]/images/graemlins/club.gif[/img] 4 [img]/images/graemlins/diamond.gif[/img]
Checked all the way to Bunky. Bunky bets $40.00, only the SB calls.

Turn: ($128.00) 2 [img]/images/graemlins/diamond.gif[/img]
Sb bets $30.00 into me. Bunky calls.

River ($188.00) 6 [img]/images/graemlins/club.gif[/img]
SB bets $100.00, Bunky thinks an almost times out and finally calls.

Thoughts?? Comments??
Need help on this one.