It debuted on the BillboardHot R&B/Hip-Hop Songs chart on September 9, 2000, spent 37 weeks on the chart (its last being May 19, 2001), and peaked at #6.
"Just Friends (Sunny)" entered the Billboard Hot 100 on October 14, 2000, spending 19 weeks there, peaking at #31 and falling off on February 24, 2001.
Prince with Soulchild recorded a version of "Just Friends (Sunny)" for his 2002 live album, One Nite Alone... Live!.
Drum & Bass artist Dave Owen sampled "Just Friends (Sunny)" for his tune "Loose Lips", released in 2012.