It's a sin to tell a liethe ink spotswritten by billy mayhewcharted in 1935 at # 1 by fats waller and # 5 by victor youngcharted at # 7 in 1955 by somethin' smith and the redheadscharted at # 99 in 1964 by tony bennettbe sure it's true when you say "i love you"it's a sin to tell a liemillions of heart have been brokenjust because these words were spokeni love you, yes i do, i love youif you break my heart i'll dieso be sure it's true when you say "i love you"it's a sin to tell a liemonologue: now, ya better be sure that it's true when you say "i luv ya." honey chile, don'tcha know it's a sin to tell a lie? whole lotta hearts have been broken. ya know why they were broken? just for these foolish little words that were spoken. ya know what they were? "i luv ya, i luv ya." darlin', ya know doggone well i luv ya and if ya break my heart i've got to die. so ya better be sure that it's true when you come runnin' up here sayin' "i luv ya" 'cause it's a sin to tell a lie.i love you, yes i do, i love youif you break my heart i'll dieso be sure it's true when you say "i love you" it's a sin to tell a lie