"Leave Before You Love Me" is a song by American record producer Marshmello and American group Jonas Brothers. It was released through Republic Records and Joytime Collective as a single on May 21, 2021. Produced by Marshmello and co-produced by Alesso, Digital Farm Animals, and Heavy Mellow, the producers wrote the song alongside Richard Boardman and Pablo Bowman of the songwriting collective the Six, Phil Plested, and William Vaughan. Christian Arnold, David Martin and Geoff Morrow of the band Butterscotch are also credited as songwriters, due to an interpolation of their song "Can't Smile Without You" in the chorus of "Leave Before You Love Me". Programming was solely handled by Marshmello and mixing and mastering was handled by Manny Marroquin. It was originally meant to be sung by Zayn Malik, and his version can be heard via leaked audios on YouTube. He ultimately passed on the song and it went to the Jonas Brothers instead. Of the Jonas Brothers' members individual contributions to the song, brothers Nick and Joe share vocals and Kevin plays guitar and background vocals.