Here's a look at why Taylor Swift fans raised their eyebrows at a line from Selena Gomez's "I Said I Love You First."

I Said I Love You First features GloRilla, J. Balvin, Tainy and Gracie Abrams, who opened for Swift during the final leg of the Eras Tour last year. The album also includes contributions from Finneas O’Connell, Justin Tranter and more.

Taylor Swift gave pal Selena Gomez's album "I Said I Loved You First" an enthusiastic endorsement on Instagram. "OH MY GODDDDDDDDDDDD," Swift wrote.