Frank Sinatra - I Understand Lyrics

I understand, and darling, you are not to blame
If when we kiss it's not the same, I understand
It's not your fault because your heart has changed its mind
You didn't mean to be unkind, I understand

Forgetting you will be far from easy
I've grown so used to your charms
I miss that old thrill and no one can fill
Your place here in my heart

But if you'll find our love was really meant to be
Then darling, hurry back to me and I'll understand