[gholizad]

I honestly dont like the flop bet. It is a multiway pot and you are out of position and you are deep so I'd rather not get involved here. Now it is very likely that villain has called with flush draw on the flop and got there on the turn but checked to get one more bet on the river. I cant see him doing it with any other random 2 pair.
As played I would probably just check/call the river because I hate to get raised like this when there is flush on the board. I cant see how we can call his raise here b/c he has flush most of the time.