It goes without saying that the cast of Once Upon a Time is like a big family in real life, but one of the sweetest friendships has to be between Jennifer Morrison and Colin O'Donoghue. Not only do they play one of the show's most beloved couples, Emma Swan and Captain Hook, but their offscreen chemistry is equally adorable. Over the years, the two have developed a sweet tradition at Comic-Con that you may never have noticed until this year. Yvette Nicole Brown, who played Ursula on the show in 2013, pointed out their signature pose during their panel at the expo. See their cute tradition below, then check out everything we know about the upcoming season.