"Don't Say You Love Me" is the debut single by M2M, a Norwegian pop duo consisting of singers Marion Raven and Marit Larsen. The song first appeared on Radio Disney before its official US radio and single release in October 1999. It was released on the soundtrack to the film Pokémon: The First Movie in November 1999 and appears in the film's closing credits. The song was featured on M2M's debut album, Shades of Purple (2000), and also appeared on their compilation album The Day You Went Away: The Best of M2M (2003).

The song received positive reviews. Chuck Taylor from Billboard said it was "absolutely enchanting" and would appeal to both young and mature listeners. It reached number 2 in Norway, number 4 in both Australia and New Zealand, number 16 in the UK and number 21 on the US Billboard Hot 100. It was certified gold in the US and Australia and remained M2M's biggest hit. M2M performed the song on episodes of the TV series One World, Top of the Pops and Disney Channel in Concert. Two similar music videos were released for the song, with one showing clips from Pokémon: The First Movie.

Marion Raven and Marit Larsen come from Lørenskog in the district east of Oslo. They met when they were five years old and became best friends, discovering they had similar interests in music. They began singing together and performing in musical productions. The duo released a children's album, Synger Kjente Barnesauger (English: Sing Famous Children's Songs), in 1996 under the band name Marit & Marion, when Larsen was 11 and Raven was 12-years-old. The album was nominated for a Spellemannprisen award. After the album's release they started writing their own pop songs and sent demo recordings out; one of the demos ended up at Atlantic Records and they were signed to a worldwide contract in 1998. They held a competition for fans to come up with a new name for their duo, and one girl suggested M2M. Raven and Larsen were 14 and 15-years-old, respectively, when they recorded the tracks from their debut album Shades of Purple, including their debut single, "Don't Say You Love Me".

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