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| Music by | Burton Lane |
| Lyrics by | Alan Jay Lerner |
| Date | 1951 |
| Source | Royal Wedding (film) |
| Publisher | Chappell & Co Inc |
"How Could You Believe Me When I Said I Loved You When You Know I've Been a Liar All My Life" has what is considered the longest title of any song in MGM musical history.
The song, which was originally performed by Fred Astaire and Jane Powell, was performed by Kermit and Miss Mousey in episode 212 of The Muppet Show.