off the charts in this brand-new live music video for their number one song “Nobody but You.”Blake took to his Instagram on Friday to share the video, which features footage of himself and Gwen performing their romantic duet live in concert interspersed with tender moments shared between the couple backstage. “#NobodyButYou (Live) is OUT NOW! And man, I am a lucky guy…@GwenStefani!” Blake excitedly captioned a teaser for the video, which Gwen later reposted.