If anyone thought singing “Karma is the guy on the Chiefs” was as public as Taylor Swift was going to go with her all-star boyfriend, Travis Kelce, think again.

On Sunday night, at the fourth of eight London Eras Tour shows, Kelce graced the famed diamond walkway at Wembley Stadium in his first-ever onstage appearance. He performed alongside Swift during the intro for “I Can Do It With a Broken Heart” in the newly added “Tortured Poets” era of the show.