Playing against a free roller.

[DRKEVDC]

Here is the scenario, you have hit your straight on the turn with two of a suit on the board. You bet and a fish raises you. Do you reraise or simply call? In the last couple of days this has happened a bunch and each time the third suit hits the board and I am losing to a 10 high flush. When I look at the HH on PP I see that this person had also made the straight and was freerolling the flush.

Is there anyway to not go broke on these hands?