[GoCubsGo]

Very tough situation. Folding is weak, but probably the best move. MP1 either has a monster or he's fishing for his flush, maybe flush + ISD. You would want to raise him to make him pay to draw, but BB just raised you, so he may have a set, and if you reraise, he will win lots from you, while you stand to gain much less if both players fold to your reraise.

An argument could be made for calling, reevalutating on the turn if a blank falls. It's only $30 more to you and there's much more than that in the pot, but there's a really strong chance that you're beat and you need to be able to fold on a later street if either play continues to show any strength.