"She Loves You" is a song written by John Lennon and Paul McCartney based on an idea by McCartney, originally recorded by The Beatles for release as a single in 1963. The single set and surpassed several records in the United Kingdom charts, and set a record in the United States by being one of the five Beatles songs which held the top five positions in the American charts simultaneously. It is the Beatles' best-selling single in the United Kingdom, and was the best selling single in Britain in 1963.
"She Loves You" was credited to "Lennon/McCartney" as were all subsequent songs written by the pair and released during the remainder of the band's tenure. With the exception of the single version of "Love Me Do" and "P.S. I Love You", all prior songs were credited as "McCartney/Lennon". The sequence was a source of controversy when McCartney changed it to "McCartney/Lennon" for some live versions released later in his career.
This was the first song by the Beatles to be heard by a substantial number of Americans; the only United States release by the Beatles that had even charted before that was "From Me to You", which lasted three weeks in August 1963, never going higher than number 116.