WATCH: Dave Portnoy reveals content of handwritten letter from Travis Kelce’s girlfriend Taylor Swift 

Dave Portnoy attended Taylor Swift's Eras Tour concert in Miami last week. Following the concert, Portnoy received a handwritten letter from the "All Too Well" singer. The Barstool Sports founder posted details of that letter on Instagram.

Following his Eras Tour visit, Portnoy posted an Instagram reel to show fans Swift's letter. It was a white envelope with Swift's seal that contained a postcard filled with words of appreciation for Portnoy.

"Dave, I'm so happy to have you at the show tonight. I wanted to say thank you for always being so supportive, so loyal and for having my back when a lot of people didn't. I hope you have a blast tonight. Love, Taylor," Swift wrote.

Portnoy enjoyed Swift's performance from the VIP suite and recalled having "an amazing night." He also shared in the video Swift's brother Austin who had hand-delivered" the Blank Space singer's letter to him.

Portnoy is a huge Swift fan but the Barstool Sports owner likes to keep it to himself regarding political opinions. So when fans asked him if he, too, like Swift was voting for Kamala Harris, he said:

"As the king of the Swifties, people are asking me what I think of her Kamala endorsement. I don't care at all. People can vote for whoever they want in this country. How somebody votes will never change my opinion of a person. I'm voting the other way, but to each their own."

Dave Portnoy speculates Travis Kelce's BFF is dating Taylor Swift's crew member

In the latest episode of the "BFFs" podcast, Dave Portnoy recalled meeting Travis Kelce's best friend Ross Travis at the Eras Tour Miami.

"I didn't know Ross, he was there. I didn't know who he was. People are freaking out about that. I asked him if he had been at a show before, he was like '14'. I think he came alone," he said. (42:15)

Co-host Kelly Keggs asked Portnoy:

"So the rumors are that he may or may not be dating one of the dancers. But we don't know exactly who."

Portnoy replied:

"I would guess he is because why else would you show up alone? I mean, I get you like Taylor Swift, but you've seen her 14 times, and you show up alone in Miami? (It would be) A little weird, so yeah, that may be it.”

Even though Portnoy had a great time at Swift's concert, her boyfriend Travis Kelce felt FOMO for not attending the concert with his family.