It looks like Scarlett Johansson and Sean Penn are making things official. While ScoJo headed to Saturday night’s White House Correspondents’ Dinner with her brother, Hunter, Sean eventually swooped in and met her at the Vanity Fair/Bloomberg party. And—gasp—the two held hands. Like in public, people. Which for celebrities notorious for keeping their personal lives private is the equivalent of taking someone home to meet your mother. What’s next? An arm around the waist?