Ryan Gosling and Rachel McAdams
It’s hard to believe that two people who went on to create one of the most romantic stories of all time did not get along at first! Ryan Gosling and Rachel McAdams had to be separated at one point since Gosling was so set against working with her. Yet, the director had the brilliant idea of locking the two in a room and insisting that they figure out their differences. Thankfully, they did and the rest is history!