without history of villain overvaluing hands or betting on 4-flush boards I have to fold here.
I have notes on players where they've played like this. villain had Kx5d and 3 diamonds on flop x/c turn was Kc and he lead/I call , river is K and he jammed. I had Ace high flush so I called but after I saw his hand I was like wtf? a 5 high flush? was that a attempt at a bluff?
so it is possible to have some weird play here but mostly not. muck it.
out of curiosity are you raising for value or as a bluff preflop?