One of Us Must Know (Sooner or Later) Bob Dylan

[Verse 1]
I didn't mean to treat you so bad
You shouldn't take it so personal
I didn't mean to make you so sad
You just happened to be there, that's all
When I saw you say goodbye to your friend and smile
I thought that it was well understood
That you'd be comin' back in a little while
I didn't know that you were sayin' goodbye for good

[Chorus]
But, sooner or later, one of us must know
That you just did what you're supposed to do
Sooner or later, one of us must know
That I really did try to get close to you

[Verse 2]
I couldn't see what you could show me
Your scarf had kept your mouth well hid
I couldn't see how you could know me
But you said you knew me and I believed you did
When you whispered in my ear
And asked me if I was leavin' with you or her
I didn't realize just what I did hear
I didn't realize how young you were