"I Love You" was written by Evans, Anthony Best, Bobby Springsteen, Jennifer Lopez, Isaac Hayes and Michael Jamison and produced by Buckwild, Mario Winans and Sean "P. Diddy" Combs. Born out of the former relationship between Combs and Lopez, the latter of which holds partial songwriter credits, was originally set to record the song for her second studio J.Lo (2001). Evans confirmed, that "it almost slipped through the cracks and ended up on her album."
The music video for the song was directed by Matthew Rolston and was released on February 4, 2002. The clip starts with an outside view of a lavishly decorated house during winter time. When the first chorus begins, Evans is seen singing while laying on a bed. During the second chorus and throughout the rest of the video, it intercuts scenes of her on the bed and her standing outside wearing a furcoat.
The song entered the U.S. Billboard Hot 100 songs chart and the U.S. Radio Songs chart the same week, both spending twenty-one weeks. On the week of April 6, 2002, it peaked at number fourteen on the Billboard Hot 100 (becoming her fourth top twenty single on the chart) while it reached thirteen on the Radio Songs chart. The song also appeared on the U.S. R&B/Hip-Hop Songs chart, remaining on the chart for thirty weeks and peaking at number two on March 16, 2002, becoming her highest charting single on the chart since her 1999 song "Never Gonna Let You Go."