Do you want to know a secret | The Beatles
“Do You Want to Know a Secret” was primarily written by John Lennon, but credited to McCartney–Lennon. The song was inspired by “I’m Wishing”, a tune from Walt Disney’s 1937 animated film Snow White and the Seven Dwarfs which Lennon’s mother, Julia Lennon, would sing to him as a child. The first two lines of the song in Disney’s movie (“Want to know a secret? Promise not to tell?”) come right after the opening lyrics (“You’ll never know how much I really love you… You’ll never know how much I really care…”).