"Used to Love U" is the debut single by American singer John Legend. It was written and produced by Legend and rapper-producer Kanye West for his debut album Get Lifted (2004). Released as Legend's debut single as well as the album's leading single in August 2004, the song reached number 30 in New Zealand and the United Kingdom as well as number 11 in the Flemish region of Belgium. "Used to Love U" also peaked at number 32 on the US Billboard Hot R&B/Hip-Hop Songs.

John Roger Stephens, known professionally as John Legend, is an American singer, songwriter, pianist, record producer, and actor. He began his musical career working behind the scenes for other artists, playing piano on Lauryn Hill's "Everything Is Everything," and performing as an uncredited backing vocalist on Jay-Z's "Encore" and Alicia Keys' "You Don't Know My Name". He was the first artist to sign with Kanye West's GOOD Music, through which he released his debut studio album, Get Lifted (2004). The album reached the top ten of the Billboard 200, received double platinum certification by the Recording Industry Association of America (RIAA) and spawned his first hit song, "Ordinary People."