The American pop star pretended to faint on the third night of his performance at Wembley Stadium, before emerging in a morning suit and carrying his girlfriend onto a piece of red furniture.
A teaser video for the next episode of his podcast, “New Heights,” released on Tuesday, shows him recording with his brother, former NFL star Jason Kelce, and the two having tea.
The video begins with Kansas City Chiefs tight end Travis saying in a British accent, “Is this tea?”
His older brother Jason then said, “Hey, stick your pinky out and do it right,” before clinking a teacup with the words “It Gets Even Weirder” written on it.
After taking a sip, Jason said, “Oh my goodness, this is amazing. I can honestly say this is the best tea I've ever had in my life.”
Travis added: “I'm not gonna lie, tea doesn't taste like this in America.”
The video, posted to the podcast's official Instagram page, was captioned: “Anyone want to grab some tea?”
“Tea” is a popular British drink and is also used as a word to refer to gossip and inside information.
The London episode will be available on streaming platforms and YouTube on Wednesday.
Following three consecutive sold-out nights in London, Swift wrote in an Instagram post that she was “still laughing/smitten” by her boyfriend's appearance onstage.
Accompanying pictures from the show and a video of the theatrical performance, she wrote: “Round 1 at Wembley Stadium was absolutely surreal.
“Looking out at a crowd of 90,000 fans every night and hearing the volume…it was some of the loudest crowds I've ever heard. The acoustic section thundered.
“I got to sing 'Crumbling' with @yelyahwilliams for the first time. We hadn't performed together since 2011 and my heart was filled with love for her and our friendship.”
“Then the incredibly talented and amazing @gracieabrams came on stage and wowed the crowd with the first performance of our song “Us.”
“And still laughing/wowed by @killatrav's Eras tour debut. I'll never forget these shows and can't wait to do 5 more in August.”
Swift closed her Sunday show with “Karma,” changing the lyrics into a special shout-out to the Kansas City Chiefs star, singing, “Karma's a Chiefs man, come straight home to me.”
The two's relationship was revealed in September 2023.
Swift has attended numerous NFL games, including the Super Bowl which Kelsey's team won, and Kelsey has attended various of Swift's concerts and has been photographed at all three of her concerts in London.
On Friday, the couple met with Prince Charles and their two oldest children, and Swift posted a selfie with the kids to her Instagram page.
