Swift has been supporting Kelce at various events for his Tight End University, the annual three-day summer training camp he founded with fellow NFL star George Kittle and sportscaster Greg Olsen

Taylor Swift is her boyfriend Travis Kelce’s biggest cheerleader.

Amid Swift, 35, showing her support for Kelce, also 35, by attending his Tight Ends & Friends concert — which also saw her take to the stage for a surprise performance of her 2014 hit “Shake It Off” — a source exclusively told PEOPLE that she “enjoys” nothing more than “letting him shine.”

The source added that the “Champagne Problems” singer “lights up” around her NFL player boyfriend and that the couple “stayed by each other’s side all while chit chatting and catching up with everyone” during the evening at Nashville’s Brooklyn Bowl on Tuesday, June 24.

The event came after the pair made what fans were calling their “red carpet” debut at the opening night ceremony of Kelce’s Tight End University the previous evening.

A video shared by the Tight End University Instagram page showed the couple beaming and sharing loving glances as they made their way into the event. Swift and Kelce also attended the ceremony’s afterparty at a bar in Nashville as seen on Instagram and X.

Kelce founded the annual three-day summer training camp in 2021 with fellow NFL stars George Kittle and sportscaster Greg Olsen.

According to the event’s website, the camp was founded to help tight ends “bond, collaborate with, and learn amongst their peers while participating in a variety of activities including film study, on-field drills, recovery, rehabilitation, and more.”

Swift kept it casual at the low-key event in a green and white checkerboard top and a matching peplum skirt. Kelce complemented his girlfriend’s look in a white collared tee with yellow embellishments, matching shorts and white sneakers.

Another post on the Tight End University Instagram page showed a photo of its founders smiling from ear to ear as they posed with their significant others.

Swift and Kelce stood on one side of the photo while Olsen and his wife, Kara, were in the middle. On the other side, Kittle posed with his wife, Claire. “Good vibes only 🔥,” the caption read.

The following evening, Swift sported a black mini dress, matching boots and a swipe of her signature red lipstick for the training camp’s concert. Swift performed her classic tune alongside 31-year-old country star Kane Brown. And she couldn’t resist another shout-out to Kelce as she did, calling him one of her “favorite players.”

“We would like to dedicate this to our favorite players who are going to play, and these are the tight ends,” Swift said as she played the introduction to the iconic hit on her guitar, much to the crowd’s obvious delight.