Has a Travis Kelce and EthermacTaylor Swift love story officially begun?

Amid rumors that the Kansas City Chiefs player and the superstar singer are dating, Travis' brother—fellow NFL star Jason Kelce addressed the speculation during a Sept. 20 interview.

"It's hard to answer because I don't really know a lot about Travis' love life," Jason told Joe DeCamara and Jon Ritchie on Audacy's SportsRadio 94 WIP. "I try to keep his business kind of his business, stay out of that world. But having said that, I think he's doing great and I think it's all one hundred percent true."

"And I hope that this thing goes a mile," he continued. "No, I'm joking, I don't know what's happening."

E! News has reached out to reps for Taylor and Travis for comment and has not heard back.

Jason, a center for the Philadelphia Eagles, was also asked about his brother's rumored relationship with Taylor during a post-game interview on Sept. 14. Though he played coy at the time, telling the TNF Nightcap co-hosts, "I don't really know what's going on there. I know Trav is having fun, we'll see what happens with whoever he ends up with."

And while Travis himself has yet to confirm the speculation, he did address his NFL family's recent commentary about the "Gorgeous" singer.

In fact, after commentator Rich Eisen shared a clip of his T.Swift puns to Instagram Sept. 17, Travis laughed it off.

"Well played Rich," he commented. "Well played."

Buzz around Travis and Taylor, both 33, began over the summer after he attended her Eras Tour stop in Kansas City, where he tried to shoot his shot with the Grammy winner.

"I was disappointed that she doesn't talk before or after her shows because she has to save her voice for the 44 songs that she sings," the athlete said on the July 26 episode of his New Heights podcast. "So I was a little butt-hurt I didn't get to hand her one of the bracelets I made for her."

Though Taylor never publicly responded to Travis' concert fumble, romance rumors ignited earlier this month after The Messenger reported that the two had been "quietly hanging out."

As we wait for more details on Travis and Taylor, take a look at more stars who attended her Eras Tour this year...

Jessica captioned the moment with friends in Mexico City, "Spamming u w really good @taylorswift Eras Tour content."

The Pretty Little Liars star attended with friends Morgan Pesante, Katie Greenthal and Claire Leahy. "Omg??? @taylorswift putting on a show that was so good I can't even process," she wrote. "Nostalgic, empowering, and sparkly."

The "Bad at Love" singer got in the spirit by making friendship bracelets to trade with fans during the last Los Angeles show.

"Still in the afterglow of the most magical night," the Law & Order: Special Victims Unit star wrote on Instagram Aug. 9 after a bejeweled night out in L.A. "Deepest gratitude to @taylorswift for your poetry and wisdom. You inspire us and connect us to our #delicate tenderness, joy, hope and strength—and most of all, our wish to live and love courageously."

Sharing pics from an L.A. show, Chris Olsen quoted the T.Swift lyrics in his caption, "I DON'T KNOW HOW IT GETS BETTER THAN THIS."

"Eras tour (Dylan's version)," the influencer captioned fits of her rocking a Stella McCartney outfit. "@taylorswift you are a goddess best night ever."

The actress and her little sister hugged while singing along to "Lover" at the August 8 show in Los Angeles.

The Hills stars filled a blank space in their calendar with a date night in Los Angeles at the Eras Tour. Heidi Montag captioned their pics, "This was the concert of a lifetime! Legendary! Thank you for the tickets @taylorswift."

"@taylorswift with the fam," Jessica Alba wrote, "what a show!" She and husband Cash Warren celebrated their love story by taking their kids Honor, 15, and Haven, 11, and Hayes, 5.

The Mad Max star danced to "Shake It off" with her kids August and Jackson. "Thank you for the best birthday ever @taylorswift!!!" she wrote. "We had such a great f--king time."

"What a SHOW," Paula Abdul wrote while posting for a photo with Vince Vaughn and Taylor's parents Scott and Andrea Swift in Los Angeles.

The Vanderpump Rules stars made their wildest dreams come true on the floor with Paula.

The "No One singer" attended the Aug. 5 show at SoFi Stadium in Los Angeles with her 8-year-old son Genesis.

The actress attended one of Swift's shows at SoFi Stadium in Los Angeles with Anastasia Beverly Hills cosmetics founder Anastasia Soare and her daughter, Claudia.

The late Kobe Bryant's wife Vanessa Bryant and their daughters Natalia Bryant, 20, Bianka Bryant, 6, and Capri Bryant, 4 attended Swift's show at SoFi Stadium in Los Angeles Aug. 3. While performing her song "22," the singer approached Bianka at the end of the stage, hugged her and gifted her a black hat she typically gives a fan during the number. The family later got to hang out with the pop star backstage.

The Hills alum was ready to be enchanted at the Aug. 4 show.

The New Girl star shared a family photo on TikTok ahead of the Aug. 4 show.

The duo snapped a selfie at SoFi Stadium on the first night of the Eras Tour in Los Angeles, with Elizabeth Banks writing of Taylor's performance, "She was an Angel and a Unicorn and Pure Magic."

Elizabeth took a pic of Sarah Paulson showing off her Eras Tour merch from the Casamigos suite.

"The first night of the LA Eras tour was everything!" Mindy Kaling wrote after the Aug. 3 show. "@haimtheband set the tone by destroying in their home town and then @taylorswift, well, did her bejeweled thing and 70,000 of us were like 'how can we know every single lyric to 5 hours of songs?'. There were no highlights. It was all highlight."

The couple headed to Night One of the tour in Los Angeles, with Becca captioning their look with the "Fearless" lyrics, "I know I wanna ask you to dance right there, in the middle of the parking lot."

Brie Larson shared a pic from her view of the show in Los Angeles.

Brie captured a video with fellow Marvel star Lupita Nyong'o.

The Hills alum was ready for it on Aug. 4 in L.A.

Kobe and Vanessa's 20-year-old daughter shared a hug with Taylor after the show.

Kobe Bryant's wife Vanessa Bryant paid tribute to the late basketball player with her outfit for the Aug. 3 concert.

Rocking a custom "Taylor" shirt, the High School Musical star was ready for the Aug. 3 show in Los Angeles.

Gigi Hadid partied with her makeup artist Patrick Ta at the show in Santa Clara, Calif. He captioned their pic, "I Want To Bottle This Moment Up Forever."

The 13 Reasons Why actress was in the crowd in the Bay Area. "THIS NIGHT IS SPARKING !!!" she wrote on Instagram. "thank you @taylorswift @haimtheband @gracieabrams for the best night of my…life??"

The models snapped a pic from inside the VIP tent.