I don’t know or care, really, if Josh Hartnett and Scarlet Johansson are still entwined and it doesn’t matter either way, but the general belief is that they met during the making of Brian De Palma‘s The Black Dahlia. If they’re still happening at this moment, by the law of Hollywood relationships the failure of Dahlia — critically, commercially — means that if they’re still together, they won’t be for much longer. Doomed. A movie is like a child — a creative by-product of an alliance that began with an on-set affair — and if it goes out into the world and is dissed by critics and the ticket-buying public, it’s like a thumbs-down on the relationship itself. Which makes the lovers feel like they’ve contracted a virus of some kind. And before you know it they’re “done.”