Sparks are flying for Travis Kelce.

The Kansas City Chiefs tight end had an excited reaction to being called Taylor Swift’s “boyfriend” in a postgame video shared on social media Sunday.

Kelce buttoned his red flannel shirt while waiting for an elevator ride in the footage, mostly ignoring jeers from onlookers.

The NFL player, 34, briefly smiled after one fan called him “Trav” — but he pumped his fist in the air when a man yelled, “Let’s go, Taylor’s boyfriend!”

Although Kelce’s facial expression remained blank, the Arrowhead Stadium security guards’ laughter was caught on camera.

Travis Kelce and Taylor Swift
Travis Kelce reacted to a fan calling him Taylor Swift’s “boyfriend.” AP

Travis Kelce
The Kansas City Chiefs player was filmed waiting for an elevator on Sunday. jeffjulian3/TikTok

Travis Kelce
He pumped his fist at the relationship-defining label. jeffjulian3/TikTok
Swift’s fans gushed on Twitter over the “Catching Kelce” alum’s “unserious” reaction.

“He’s so obsessed with her and I love it for them,” one wrote, with many labeling Kelce “proud” of the Grammy winner and “secure” in himself.

Another called Kelce “THE BEST at handling everything with grace and respect.”

Taylor Swift and Patrick Mahomes
Swift watched Kelce’s team beat the Los Angeles Chargers over the weekend. Getty Images
However, one fan pointed out, “This is cute and I love how he responds but please, shouting things like these won’t be good in the long run. He’s great at what he does and we all should respect that.”

Kelce, who has been linked to Swift since September, walked out of the Kansas City, Mo., venue hand in hand with the performer.

Follow Page Six’s coverage of Travis Kelce and Taylor Swift’s whirlwind romance

Not only did Swift, 33, show her support for Kelce, 34, by pairing her pleated skirt and heeled loafers with a Chiefs sweatshirt, but she also sported his jersey number, 87, on a beaded bracelet.

Taylor Swift and Travis Kelce
The couple have showed PDA many times this month. GC Images
The couple left the sporting event in a golf cart and reportedly attended an afterparty at Kelce’s mansion, where guests enjoyed local barbecue.

Page Six confirmed last week that the two-time Super Bowl winner has purchased a larger Kansas City mansion in a gated community amid his and Swift’s private romance.

While Swift has yet to speak on their connection, the duo have been engaging in PDA all month long.