[MTBlue]

Tough call b/c this play often times is a drawing hand trying to semibluff and lock in odds but you happen to hold the only drawing hand that would do this. I think you see a small flush or a set here the majority of the time unless the guy is a maniac (this particular line happens to be my favorite play with a flush). Fold and wait for a better spot to put your money in. (Would you call the bet with only the nut flush draw?). Why didn't you lead the flop? I think it might give you more information on where your at. Hope this helps.