Cheat Codes and Little Mix announced on Twitter that the song would be released on June 22, 2018. Snippets of the song were teased by Cheat Codes and Little Mix prior to the song's release. The song was revealed in June 2018 with its inclusion on The Pool Party album, which accompanied the television series Love Island. The song was written by Pablo Bowman, Nicholas Gale and Richard Boardman, with production by Digital Farm Animals, Maegan Cottone. Little Mix performed the song at the 2018 Jingle Bell Ball, BBC Teen Awards, and on tour, the most recent being The Confetti Tour in 2022. It has since received two platinum and gold music certifications. The song peaked at number fifteen on the UK Singles Chart, and reached the charts in thirteen other territories including France, Ireland and Australia. 'Only You' reached the top ten in New Zealand and Hungary. A music video was later released and features a same sex couple with a LGBTQ+ themed storyline. The songs lyrics is about missing a special someone in your life. It was met with positive reviews from critics, with some citing it as one of the best summer songs of 2018. Musically 'Only You' is an edm track with elements of dance-pop.

The song appears on the Ministry of Sound compilation album The Pool Party, as the eighteenth track on the deluxe edition of their fifth studio album LM5 and the acoustic version appears on the Japanese edition of the album. The single was written by Pablo Bowman, Trevor Dahl, Kevin Ford, Matthew Russell, Nicholas Gale Richard Boardman, and with production by Digital Farm Animals, with Maegan Cottone and Trevor Dahl. It was released on June 22, 2018, as a single through Syco Music and 300 Entertainment. ' Only You' is a song by American electronic music trio Cheat Codes and British girl group Little Mix.

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