"The story is that he had written this song and sent it to me on my phone. He's like, 'I wrote this song.' And I was like, 'Whoa, what if I don't like it? Huge turnoff!' I listened to it and thought, Oh, my God, I love this. He said, 'Write the rest of it,'" Stefani, 46, said on the May 18 episode of Handler's new Netflix series, Chelsea.
"There was a time when I was really insecure about writing," she added. "There was such a drought of time when I was so insecure. I think when you have a really long year, you start to compete with your own self and get insecure."
"Go Ahead and Break My Heart" is a track off of Shelton's 12th studio album, If I'm Honest. The couple recently performed the ballad on The Voice — and couldn't keep their eyes off each other during the set.
Shelton, 39, previously joked that he penned the tune to "impress" the No Doubt frontwoman. "[I was] just trying to write her a song to get her excited about me. And I sent her the song half-finished and she wrote the other half of the song. So, it's such a fifty-fifty emotionally invested thing," he told Extra on May 10.
Last month, he also admitted that the song is personal for both of them. (Shelton and Stefani got together after divorcing their significant others, Miranda Lambert and Gavin Rossdale.)
"I know that I don't cowrite that much because I'm very insecure about it, I guess, and [Gwen's] kind of got her circle of people that she writes with. But for us to reach out to each other as writers, it may never happen again," he told Entertainment Tonight. "I hesitate to brag on it too much, but I really think that it's as good of a song as I've ever written in my life."
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