The Voice stage may as well have been a battlefield as the show's final nine contestants competed on last night's (May 9) episode, but it was, conversely, an on-stage union that commanded the audience's attention.

Fellow coaches Blake Shelton and Gwen Stefani, who have been dating since November 2015, debuted new duet "Go Ahead and Break My Heart" on the broadcast while essentially engaged in an unspoken staring contest. The song, which was released on iTunes yesterday ahead of Shelton's upcoming tenth LP If I'm Honest, tells the story of two people who are a little gun shy about entering into a relationship. In the clip above, though, there isn't a single misgiving between the pair.

Listen to PopCrush's Exclusive Interview With Gwen Stefani: