"Ed was like, ‘This is the best thing you’ve ever done,’" Cabello tells AMP Radio.

Camila Cabello called in to 97.1 AMP Radio on Friday morning (Sept. 6) to chat about her double dose of new singles "Liar" and "Shameless," as well as what fans can expect from her upcoming album Romance.

Cabello also discussed an unreleased track that she called her favorite song she's ever written. She even played the tune for idols-turned-friends Taylor Swift and Ed Sheeran in Nashville. "I played them both the song and I remember Ed was like, ‘This is the best thing you’ve ever done,’ and Taylor loved it. That really meant so much to me because they’re my songwriting heroes," Cabello told morning show hosts Edgar Sotelo and Chelsea Briggs.

"It’s very heartfelt and very my kind of song," Cabello continued. "It’s a song that I feel like I’ll be so proud of when I’m 80 years old."

As for "Liar" and "Shameless," she wrote the duo a week before the release of her Shawn Mendes duet "Señorita."? "I think that these two are the same chapter of the story," she explained when asked why she dropped two songs at once. "It’s the same situation and basically two different sides of it. I wrote both songs in the same day.

"It was about a person I didn’t want to have feelings for and I didn’t want to face my feelings," she continued. "I didn’t want to like him because I was scared."

Listen to the interview below.