Taylor Swift's song "Opalite" is her fiancé Travis Kelce's favorite on The Life of a Showgirl, and it turns out, he was a major source of inspiration for it. "He loves that one," Swift, 35, said of Kelce, also 35, during a Friday, October 3, interview on the U.K.'s Capital FM radio station. "I have favorite words, favorite phrases [and] things I'll put in an endless file of lyrics that I'm constantly going to go and cherry-pick from when I'm writing." At one point, Swift added "opalite" to her list. "I had learned that it's actually a man-made opal," she said on Friday.