The song is the group's second and final single, and has been covered by numerous artists, including Mandy Moore & Jon Foreman of Switchfoot, America and Hall & Oates.

The song is a midtempo ballad in which Gregg Alexander reflects on a past relationship[1] and wonders why his girlfriend left him, eventually concluding that someday he'll know the answer.

'"[2] The single failed to match the success of the previous single "You Get What You Give", due in part to the announcement by lead group member Gregg Alexander that the New Radicals "[would] no longer be a recording, promoting, or performing entity" and that he would focus on producing and writing material for other artists, going on to state "the fatigue of traveling and getting three hours' sleep in a different hotel every night to do boring 'hanging and schmoozing' with radio and retail people is definitely not for me.

[2] The song was covered by Mandy Moore and Jon Foreman on the A Walk to Remember soundtrack, by Hall & Oates on their 2003 album Do It for Love and live by Ronan Keating during his 2002 Destination Everywhere Tour.

The Mandy Moore and Jon Foreman version was sampled by Shawnna on her song "Chicago" (featuring Buddy Guy, Avant & Malik Yusef) from her 2006 album Block Music.