Hi Cricket. I posted this in answer to someone else's query a few days ago. Not sure if this is the definitive version, but I got it from a John Denver TV show, and the simple chord arrangement has stood me in good stead for many years. According to JD's intro this song had special meaning to him as it was "mom's favourite song in the whole world".

Be sure it's (G)true when you (D)say I (G)love you

its a (G)sin to (B7)tell a (C)lie

(D)Millions of hearts have been (G)broken

(A7)just because these words were (D)spoken

I love (G)you yes I (D)do I l(G)ove you

If you (G)break my (B7)heart I'll (C)die

So be (C)sure it's true when you (G)say I love (E)you

It's a (A7)sin to (D)tell a (G)lie

Cross my heart, hope to die
I'll never ever ever tell another white lie.
Took my little girl out on a date last night
next to her gravel gertie woulda looked alright
Now I'me between the devil and the deep blue sea
'cos I said baby you look good to me
I told he I loved her and oh how I lied
Now she's gettin set to be my blushin' bride
If she leads me to the altar I'm sunk
I cannot tell the preacher I was drunk
So Lord have mercy on a no account sinner
Give me one more chance and let another guy win her
Cross my heart and hope to die
I'll never ever evr tell (one more time)
I'll never tell another white lie.

Perhaps not the most auspicious start to your collection, but a start nevertheless"

Best wishes Mel