 "Case of the Ex" became a top five hit on the US "Billboard" Hot 100 for the week of December 2, 2000, peaking and spending three consecutive weeks at number two.Internationally, the single became a Top 20 hit, topping the charts in Australia for the week of March 18, 2001 for two consecutive weeks and peaking at number three in the United Kingdom.The accompanying music video for the single was directed by Diane Martel.