02/08/2011 05:12 am ET Updated May 25, 2011

Blake Lively Dating Ryan Gosling?

Ryan Gosling's new movie Blue Valentine almost got an NC-17 rating, but the actor kept the flirtation with Blake Lively noticeably G-rated at the film's premiere after-party.

Still, the pair were almost inseparable as they engaged in close conversation Thursday night while the event spun around them at The Top of the Standard at the Standard Hotel in New York. At one point, Gosling started to leave Lively's side and the actress yanked him back to continue chatting, according to an observer.

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