At the U.S. premiere of Gosling's directorial debut Lost River
at SXSW, a woman in the audience took the opportunity to ask her girlfriend to marry her.
When the moderator called on her, she said, "I think your film is amazing. [But] I'm gonna kind of take away from it for a second if I can, and ask my girlfriend of 11 years if she'll marry me."
Gosling and the cast were visibly stunned and elated, with Mendes and Ronan covering their mouths in excitement. Ryan even walked over to pass the woman his mic to make the moment even more perfect.
Her girlfriend said yes -- because how else do you answer when you have a room full of elated spectators -- and the cast and audience cheered for them as they hugged.
Getting the mic back, Gosling said, "Well, let's go out on that note, shall we?" The director/actor clearly knows when to take his bow.
Check out the sweet moment in the video below. It stars around the 11:45 mark.