[AlexB182]

First off I don't know if I could fold a Royal FD here, there are at least 2 cards out there that give you the pure nuts here...
But I think the main problem here is if he rather has a hand like KQ,QJ here, but c/r here when a third diamond comes off looks rather like a boat. Another possibility is that he also made his flush right there, but would he raise his flush when the board pairs? I really think I call the minraise on the turn and reevaluate on the river, though it would be a tough decision for us if he shoves then and we don't improve...