Blake Shelton & Gwen Stefani Heat Up the Billboard Music Awards With Romantic Duet

The couple brought their single to the stage once again.

Blake Shelton and Gwen Stefani brought some fireworks to the Billboard Music Awards stage!

The couple, who began officially dating last fall while co-starring on The Voice, brought their romantic duet, "Go Ahead and Break My Heart," to the BBMAs stage on Sunday. The show aired live coast-to-coast on ABC from the T-Mobile Arena in Las Vegas.

Blake and Gwen were welcomed to the stage by presenters Pete Wentz and Thomas Rhett, who said: "Together, they're a perfect match in real life and onstage."

Blake started the song solo, dressed in black head-to-toe, while Gwen entered from backstage in a glittering, nude-colored dress to join on the chorus. Sticking true to the aesthetic of their earlier performances, Blake and Gwen delivered the whole song while gazing lovingly at each other and embraced in a sweet side-hug at the end.

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The duo debuted the song in a live performance on The Voice earlier this month. Hours later, they sang it for fans at Blake's iHeartRadio event. The song was co-written by Blake and Gwen and is featured on the former's new album, If I'm Honest, which is out now.

"When I originally started writing this song that we're performing tonight, I was only trying to impress Gwen," Blake told ET backstage at The Voice on May 9. "I started this song and wrote about half of it and sent it to her and she wrote the other half of it. It was just kind of something for she and I to help us feel better about what we were going through."

And even with the song's somber tone, the adorable pair could hardly hold back their own joy during rehearsals earlier this month.

"The hardest part was not smiling throughout the whole thing while we're singing it because we can't believe this is happening. We still can't believe this is happening," Blake admitted. "It's cool to be witness to something that's this honest and fun."

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