updated 05/19/2010 AT 1:00 PM ET
•originally published 05/19/2010 AT 4:40 PM ET
Their new movie Blue Valentine earned great reviews so far at the Cannes Film Festival – but costars Michelle Williams and Ryan Gosling have everyone on Croisette talking about something else: whether or not they’re a real-life couple.
In the drama, Williams and Gosling, both 29, play a couple trying to prevent their marriage from falling apart. But the stars looked anything but troubled at Tuesday’s photocall, where the actor squeezed Williams’s hand affectionately.