Hello fryandspicy,
Flop: Since he is betting pot I wouldn't really like the raise here, and likely I think we can't really get him away from the hand. Also since the board has a flushdraw in it and we have to discount few outs I'd rather just fold it here.
As played
Turn: Don't really like the raise, if he is giving us the great odds, then just take them, abuse the situation.
As played if turn was Raised
River: Since he is potting it, I's rather close, either to raise it or not. But since you didn't give any stats or reads on the opponent I'd also just Call it.
Best regards.