Ryan Gosling and Rachel McAdams
Although they eventually dated, it looks like Ryan and Rachel didn't like one another right away. In fact, it was the opposite. Speaking about their relationship in the early days, director Nick Cassavates said: "Maybe I'm not supposed to tell this story, but they were really not getting along one day on set. Really not. And Ryan came to me, and there's 150 people standing in this big scene, and he says, 'Nick come here.' And he's doing a scene with Rachel and he says, 'Would you take her out of here and bring in another actress to read off camera with me?' I said, 'What?' He says, 'I can't. I can't do it with her. I'm just not getting anything from this.'"