"4Ever" is the lead single from Lil' Mo's second album, Meet the Girl Next Door (2003). The song features guest vocals by rapper Fabolous and production by Bryan-Michael Cox and Craig Love. Prior to its official physical release, the song was serviced to radio stations through airplay in early December 2002. Upon its release, critics referred to the single as an "uptempo wedding" ode.

On January 19, 2003, a two-day filming shoot began for the music video of "4Ever," which was directed by Benny Boom in Brooklyn, New York. The video initially premiered on BET in late February 2003.

The synopsis of the video focuses on Lil' Mo's reminiscent memories of her boyfriend as she climbs the stairs of an apartment. Each step she takes, Mo receives a flashback, one of which of course features Fabolous.

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