10-3s in sb

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Party Poker (10 handed) converter

Preflop: Hero is SB with 3[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/diamond.gif[/img].
UTG Calls,<font color="#666666"> 3 folds</font>, MP2 calls,<font color="#666666"> 2 folds</font>, Button calls, Hero completes, BB checks.

Flop: 9[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
Hero checks, <font color="#FF0000">BB bets</font>, UTG folds, <font color="#FF0000">MP2 raises</font>, Button folds, <font color="#FF0000">Hero folds </font>...

Upon seeing this flop, I was torn between just betting out, and check/calling, but when it was bet/raised to me is folding correct, when could be playing for half pot? (plus I have bd flush draw). BB unknown, MP2 I have not seen raise yet, though he almost always bets if checked to.