[callme]

Call the river for sure - he might think you missed your FD and trying to steal the pot wheras he also just called down with a FD that never hit. Besides the flush we are almost ever ahead here, and if he actually had a flush he would have shown you that be the turn.

Further i dont think a flop lead is that good like already mentioned. People tend to flatcall with a flush and give you not much of an idea where you really stand til the raise you. But like i said before - this never happend and so your hand is very likely best, unless he is on the very tricky (but not value maximizing) side of players.