Be sure it's true when you say, 'I love you' It's a sin to tell a lie Millions of hearts have been broken Just because these words were spoken I love you, yes, I do, I love you If you break my heart I'll die So be sure that it's true when you say, 'I love you' It's a sin to tell a lie Be sure it's true when you say, 'I love you' It's a sin to tell a lie Millions of hearts have been broken Just because these words were spoken I love you, yes, I do, I love you If you break my heart I'll die So be sure that it's true when you say, 'I love you' It's a sin to tell a lie