According to Snow Patrol frontman Gary Lightbody: "It's near the beginning of a dangerously reliant relationship. The album is full of songs like this. Rather than a break-up record this is a make-up record. That is a massive generalisation but it is a more positive record than the last".[this quote needs a citation] He has said that "the song is about a damaging but fulfilling relationship, something that terrifies you, but you can't quite bring yourself to look away".
Yahoo! Music's Ben Gilbert welcomed the single warmly, giving it 7 stars out of 10. He said that the song was Snow Patrol's return to the UK rock scene "with the sort of form that would see an ex-con arrested on sight." Though he criticised the song for being "too much of a mediocre stretch bearing in mind our location in the year 2006 and the current existence of Spank Rock", he defended the song saying "there is a keening momentum and inevitably busted emotional power to Gary Lightbody and co's comeback that suggest all of their dreams are about to come true."
The music video for the song was directed by Nathan Connolly. It was filmed in a working power station in Kent. It features the band play the song on a platform 120 feet in the air. When the single was released in the United States, another video directed by David S. Goyer was shot. The band flew to Los Angeles for the shoot, from Las Vegas where they had been staying for a while. Connolly later said that the band were not fans of shooting videos. He felt the band could not act, even if they tried and was personally relieved that he was not needed to act in the video.
^ abPower, Ed (11 January 2007). "Love minus zero: Snow limit". Hot Press. Archived from the original on November 17, 2007. Retrieved 2009-11-01.. Appears as: "Snow Patrol flew to LA from Las Vegas, scene of the video shoot for their next US single, "You’re All I Have". The promo was overseen by David Goyer, a director and screenwriter..." and ""We’re not really fans of making videos," says Connolly of their sojourn in The Killers' home town. "Up until now we've been lucky because all everyone wants us to do is stand there and play in front of the camera. There's no need for any acting. I don’t think we could do that if we tried.""