The song first charted in the United Kingdom on May 29, 1963.[11] It received significant airplay, began to rise in the charts and was noticed by Paul McCartney. In 2000, McCartney said the initial idea for "She Loves You" came from a Bobby Rydell hit that was popular at the time (mid-1963).[12]Lennon and McCartney started composing "She Loves You" on June 26, 1963 (about four weeks after the release of "Forget Him" in the UK). "She Loves You" was completed the following day.[12]
"Forget Him" peaked in the United States in early 1964 and was ranked No. 20 on Cash Box's "Top 100 Chart Hits of 1964".[13]
English rock and roll singer Billy Fury covered "Forget Him" as a non-album single in 1983. It became a hit in the United Kingdom, reaching #59. Brazilian singer Roberto Carlos covered the song in 1966 as "Esqueça".