This song about a boyfriend who's cruelly playing with a girl's heart was inspired by an actual long-term relationship that La Roux singer Elly Jackson was involved in.
Jackson described this song to the BBC program Newsbeat as, "much much happier and much brighter and maybe a little easier on the ear for people that couldn't quite grasp In For The Kill, because I know for a lot of people the vocals are quite shrill."
This was released as La Roux's fourth single from their self-titled debut album. Jackson explained to The Guardian July 22, 2009 why this came out during the summer season: "I think sunny weather drives you towards certain tempos and melodies that work well booming out of open windows." She added that the duo demanded that this be released in summer, "for that reason. It has a brightness that wouldn't work in winter."