Top 2 pair on 3-flush flop

[trojanrabbit]

This is my 3rd hand at this table so no reads.

Party Poker No-Limit Hold'em, $ BB (6 max, 5 handed) converter

Hero ($21.65)
SB ($33.54)
BB ($22.5)
UTG ($5.9)
MP ($155.17)

Preflop: Hero is Button with 8[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.1.
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $0.5</font>, Hero calls $0.50, SB (poster) calls $0.40, BB calls $0.25.

Flop: ($2) 8[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">BB bets $2</font>, MP folds, Hero ?