Movie co-stars who disliked each other off-screen

There have been plenty of stories throughout Hollywood history about co-stars who have taken their onscreen relationship offscreen and become friends — or lovers — in real life. But not everyone who works together can actually get along, and sometimes, life on set can be a real nightmare. We're taking a look at a few of the times when a pair of stars seem to be the best of friends on camera, and are anything but behind the scenes. It takes a great actor to be able to fake this level of chemistry with their co-stars. Here are the movie friends who couldn't stand each other in real life.