Josh Hartnett and Scarlett Johansson

Josh Hartnett and Scarlett Johansson dated very seriously for a while. They were spotted making out at a nightclub in London. Then, in 2006, Scarlett told Allure magazine that she was very happy with Josh Hartnett. After they called it quits in 2007, Josh said that they were just too busy working for the relationship to pull through.