We aren't talking about the New Year's Eve fireworks, either. The couple took their relationship to the next level on Dec. 31 by making things Instagram official. While the two have been rumoured to be dating since May 2020, they didn't confirm their romance until the festive holiday. "Last minutes of 2020 here in LA," the This Is Us star captioned his Instagram, alongside a black-and-white selfie with the actress. "Bring on 2021! Happy New Year!" The Blood & Treasure actress shared a similar message on her account. "Sayonara 2020, it's been real," she wrote with a photo of her and Justin smiling. The couple's Instagram debut comes seven months after they fuelled romance rumours. In May, they were spotted together in Los Angeles. At the time, a source told that they "shared great chemistry" when they both previously starred on The Young and The Restless. As the insider put it, "Although Justin and Sofia were not a couple on the show, writers and producers loved pairing the two actors together because they shared great chemistry."