How Could You Believe Me When I Said I Loved You When You Know I've Been A Liar All My Life? 

From the MGM Picture "Royal Wedding"
Music by Burton Lane; Lyric by Alan Jay Lerner
Performed by Jane Powell and Fred Astaire

Fred: How could you believe me when I said I loved you when you know I've been a liar all my life?

Jane: You've had that reputation since you were a youth-

F: You must've been insane to think I'd tell you the truth!

J: How could I believe you when you said we'd marry-

F: Why, you know I'd rather hang than have a- wife! I know I said, I'd make you mine-

J: Now wouldn't you know that I would go for that old line!

F: How could you believe me when I said I loved you when you know I've been a liar...

J: You sure have been a liar!

F: A double crossin' liar...

J: A double crossin' liar!

F: All my doggone, cheatin' life!

J: You said that you'd love me long...

F: (shouted) So what?

J: and never would do me wrong...

F: (shouted) Stop bending the suit!

J: and faithful you'd always be...

F: ME? Why baby you must be loony to ever believe a lower than low two-timer like me!

J: You said I'd have everything...

F: (shouted, to audience) Get her!

J: A beautiful diamond ring...

F: (laughing up his sleeve) ha ha ha..

J: A bungalow by the sea...

F: (shouted, to audience) A bungalow, yet! (sung, to Jane) You're really naive to ever believe a full of baloney phoney like me!

J: (spoken) Why, I sure must've lost my head!

F: (spoken) You ain't lost nothin' you never had!

J: What about the time you went to Indiana?

F: I was lyin', I was down in Ala-bam!

J: You said you had some business you had to complete-

F: What I was doing I would be a cad to repeat!

J: What about the evening you were with your mother...

F: I was rompin' with another honey-lamb!

J: To think you swore, our love was real!

F: Baby, leave us not forget that I'm a heel.

J: How could I believe you when you said you loved me...

F: Why, you know I've been a liar!

J: A good-for-nothin' liar!

F: All my good-for-nothin' life!

(bridge)

J: You know you've have been a liar!

F: I know I've been a liar...

J: A double crossin' liar!

F: A double crossin' liar!

J: All your good-for-nothin' life!