At the event, which was held in the Tate Modern Museum, Harris sat with and posed with his ex Ellie Goulding. The pair reportedly dated back in 2013, but have remained close friends and collaborators since.
Goulding is also notably pals with Harris’ ex, Taylor Swift, and previously took credit for setting the two up.
"I did play matchmaker, that's true," Goulding told The Sun in June 2015. "Calvin is a really great mate and he's so fantastic, and Taylor is such a cool person who I love."
Swift and Harris split in June of this year and almost immediately after she was spotted out with British actor Tom Hiddleston. The pair had a whirlwind romance, traveling around the globe together and meeting one another’s families.
But ET confirmed on Tuesday that the celebrity couple had officially split after three months together. Though the breakup was reportedly “amicable,” sources told Us Weekly that Swift was the one to end things due to her discomfort over how public Hiddleston wanted their relationship to be.
Harris and Swift’s split started off on good terms, with the DJ even tweeting a kind message about the end of their relationship. But things took a turn in July when Swift’s rep confirmed that she penned Harris’ hit song “This Is What You Came Here For.”
"Hurtful to me at this point that her and her team would go so far out of their way to try and make ME look bad at this stage though," he tweeted at the time. "I figure if you're happy in your new relationship you should focus on that instead of trying to tear your ex bf down for something to do."