Scarlett Johansson has broken her silence over boyfriend Josh Hartnett, declaring the actor is "very sweet" and "a great person". The handsome couple fell for each other while filming thriller The Black Dahlia in Bulgaria in April 2005 and they have always refused to discuss each other - until now. Johansson tells American magazine Allure, "Josh is very sweet. He's a good boy. A great person. I'm very lucky and I'm very happy."