Michelle Williams & Ryan Gosling Stick Close at 'Blue Valentine' NYC Premiere

Co-stars have to stick together! Ryan Gosling totally had Michelle Williams' back as they walked down the theater aisle last night at the NYC premiere of Blue Valentine, hosted by Quintessentially and held at The Museum of Modern Art. Michelle's velvety dress bow even seemed to coordinate with Ryan's suit jacket!

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Michelle and Ryan were so dedicated to their roles in Blue Valentine, that of a young married couple who see their love go from sublime to nonexistent, that they moved into a house in Pennsylvania for four weeks with Faith Wladyka, who played their daughter.

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While there, to try to achieve the feeling of a real family, they had a pretend Christmas and birthdays, and Ryan “would make us ice-cream shakes to put on weight,” Michelle told New York Magazine. “We’d clean up the kitchen, take out the trash, do a budget — I’d do a budget and Ryan would try to put in $500 a year for cigarettes.”