Blake Shelton and Gwen Stefani Perform Impressive Duet at Billboard Music Awards, Also Lock Eyes for Impressive Amount of Time

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Not to be outdone by all the other big-name Billboard Music Award performers Sunday night, Blake Shelton and Gwen Stefani hit the T-Mobile Arena with their lovely song, "Go Ahead and Break My Heart." Impressive duet, definitely. But also: impressive PDA or impressive staring contest? You decide.