Gwen Stefani surprised the crowd at The Forum in Los Angeles Friday night (February 17) when she joined her beau Blake Shelton onstage during his concert.

The pair, who met on set of NBC's The Voice, performed their 2016 single "Go Ahead and Break My Heart" (off Shelton's album, If I'm Honest), much to the delight of the audience.

After the song, Stefani rejoined the crowd, where she watched the rest of the concert from her seat.

Watch clips of their duet, below:

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