[UOPokerPlayer]

He's taking a really passive line here. Could mean diamonds, could mean a lot of things. Doubt he checks the river with the flush. Raise the flop more. If you have his range as mostly overpairs, make him pay the most before a scare card comes. I think I'd make a bigger raise than pot, like 40 or so. This looks kind of weird, and I think you get the pot big enough to commit him on the next two streets. This also cuts down on his implied odds. I think it's really tough to get away from this hand, I think giving your opponent credit for the flush heads up a lot is bad policy. You're stuck to getting stacked by the flush unless the board has four imo.

Play it faster? Heck yes.