[tiltaholic]

Hi
Don't worry about it.

I would:
Raise the flop (as you did) - people call 2 all the time at party. MP2 3-bet, in retrospect he shouldn't have done that since he shut people out of his flush draw...but your raise was good, I think.
Bet the turn - people often check around when the scary 3rd flush card falls.
Bet and 3-bet the river. You win this hand so many more times than you lose.
-t