Hollywood heart-throb Josh Hartnett has rubbished rumours he has split from sexy girlfriend Scarlett Johansson. The SIN CITY star, 27, and Johansson, 21, have been dating for over a year (begsAPR05) after meeting on the Bulgarian set of forthcoming movie The Black Dahlia. Despite rumours of Hartnett partying with a string of blonde beauties in recent weeks, the actor's spokesperson tells the New York Daily News that the couple "are still together".