Gwen Stefani and Blake Shelton wrote a song together last year and on Monday, they will perform the new tune on The Voice.

Following her performance last month of her new song, "Misery," Stefani will join boyfriend Shelton, who currently stars as a coach, on stage as they sing "Go Ahead And Break My Heart."

"Blake Shelton and Gwen Stefani are set to perform their new duet together for the first time on The Voice stage Monday night," a source confirmed to PEOPLE Magazine on Tuesday. "The duo wrote the song 'Go Ahead and Break My Heart' together last fall and finally revealed last month it would appear as the ninth track on Shelton's upcoming album If I'm Honest, out May 20."

On Twitter, Shelton expressed his excitement in his upcoming performance.

At the end of last month, Shelton spoke of his experience writting with Stefani on early on their relationship.

"We were at a point where it's like, 'Do we want to go there? What will people think?' And then we finally just got to the point where it's like, 'You know what? I don't give a s---," the country star told PEOPLE Magazine. "This song's important to us and the fact that we wrote it together is so important to both of us."

"I'm insecure about my writing and who I write with and I don't know – I'm just weird about it sometimes," he continued. "I think Gwen has a smaller circle too when it comes to writing, and the fact that we went there that early as we were getting to know each other, it's just remarkable. As different as we are musically, we're a fan of the same type of songs. We have these playlists that we send each other that are stuff that we loved growing up and they're so similar, so I think it made it easy for us to collaborate."

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Gwen Stefani, Blake Shelton