Taylor Swift and Travis Kelce‘s latest relationship milestone will have you feeling so high school.

For the first time ever, the NFL star joined the Grammy winner onstage at her sold out Eras Tour, surprising the crowd at London’s Wembley Stadium June 23 with a sweet cameo. During the jaw-dropping moment, which took place during the Tortured Poets Department section of the concert, Travis—wearing a tux and top hat—swiftly swept Taylor off of her feet and carried her to another part of the stage.

“I’m still cracking up/swooning over @killatrav’s Eras Tour debut,” Taylor wrote on Instagram June 24 with a smiling, heart-faced emoji. “Never going to forget these shows.”

Travis’ cameo came during Taylor’s third consecutive performance at Wembley Stadium. The “Blank Space” singer kicked off the series of shows June 21, with Travis, Jason Kelce and Kylie Kelce in attendance.

Meanwhile, Prince William filled the blank space in his birthday calendar to attend Taylor’s concert with kids Prince George and Princess Charlotte.

“Happy Bday M8!” Taylor captioned an Instagram selfie with the family and Travis. “London shows are off to a splendid start.”

The royal post also doubled as a hard launch for Taylor and Travis on Instagram, nearly a year after their relationship began.