Revealing mistake: When the driver is taking Amanda to the airport at the end, all the dials on the car are at zero, so obviously the car is not moving at all.
Other mistake: When Amanda's driver brings her to the cottage for the first time, he tells her he can't drive her up there because he would not be able to turn around, but the same driver picks her up at the cottage when she is leaving and presumably has no issue turning around at all, and you can see it's a flat field in front of the cottage.
Continuity mistake: When Cameron Diaz is throwing shoes at Edward Burns at the beginning of the movie, the shoes she has thrown are on the landing in one shot and then disappear in the next.
Other mistake: The wrong flag for Poland is shown when Amanda s going through the exchange countries at the beginning of the movie.
Other mistake: In the beginning scene when Amanda throws the first shoe at him it ends up behind him in the middle of the hallway. When she throws the second shoe at him it ends up at the top of the stairs where all of a sudden the first shoe is. When he enters the room there are no shoes at all. They even walk down the stairs without picking up his shoes.
Continuity mistake: When Amanda drives into town, one shot shows her running her left hand through her hair and the next angle shows her right hand.
Factual error: The cab from the airport taking Iris to Amanda's house is going through Malibu and heading southbound. Malibu is north of the airport so the cab is driving the wrong direction.
Answer: I'm not sure how much she was paid, but no, it isn't a real movie.