[AllIn3High]

Fold the flop after it's a bet and a call to you. I would just check/fold this flop with that many people in the hand.

Since you didn't I'd check/raise the turn big, if i was betting out it would be atleast pot.

Since you didn't nothing of the above..... I dunno, it looks a lot like he's milking you with the flush.... but you're getting a great price but button is left to act.... I probably make a crying call...