"Fool Again" was the last single to be released from Westlife's self-titled debut album. It became the band's fifth consecutive UK number one single and spent 12 weeks on charts. It sold over 215 000 copies in UK so far. The song debuted and peaked at number two in the band's native Ireland, making it the first Westlife song not to reach the top of the Irish chart. The video for the single was filmed in Mexico City, Mexico, most notably in locations such as Zócalo and Ciudad Satélite.