United Kingdom, Nov. 26 -- Taylor Swift has hailed Travis Kelce as the "greatest surprise" of her life.

The 35-year-old pop singer got engaged to the NFL star earlier this year, and in a new clip from her upcoming The End of an Era docuseries, Taylor has shed more light on their romance.

The blonde beauty - who has previously dated the likes of Harry Styles, Calvin Harris and Joe Alwyn - says: "The most meaningful relationship I've ever had started with a man saying he was butthurt that I didn't wanna meet him.

"Greatest surprise of my life."

Taylor also jokingly compared her music career to Travis' sporting career.

She quipped: "We both entertain people. His with considerably more violence than mine."

What's more, the preview featu...