Taylor Swift Cheers on Travis Kelce at Packers-Chiefs Game

The Chiefs tight end traveled to Argentina last month to see Swift perform.

The “Lavender Haze” singer, 33, watched from a box as the Kansas City Chiefs tight end, 34, and his team faced off against the Green Bay Packers in Green Bay, Wisconsin.

Swift, dressed in a bright red coat, could be seen snapping photos of the field. A fan-shared video on X (formerly Twitter) showed the Grammy winner walking around the box, taking video footage. Swift was joined by Brittany Mahomes, wife of Chiefs quarterback Patrick Mahomes.

Last week, a source told PEOPLE that the couple was the “real deal.”

“They’re still a little shocked by all of it — that he’s dating the Taylor Swift, but they’ve seen how down to earth she is with his friends and family,” the insider close to the Kansas City Chiefs star said exclusively.

The source added that the relationship is “growing” because Travis and the music superstar both have found success in their own worlds — and they continue to appreciate one another’s accomplishments.

“They’re both really hard workers, and he acknowledges her art is hers, and he has what’s his,” the source told PEOPLE. “He understands the territory their relationship comes with and like he said, isn’t letting any of the hoopla impact how they’re growing together.”

The source concluded, “Their relationship is about the two of them, and he sees Taylor for who she is and vice versa.”