I find this song particularly moving today...
Your letter said that you were leaving
But you didn't know how long
I have never stopped believing
That one day you would return
And though waiting is the hardest
Part of everything I do
I do confess it's getting better
Knowing I will be with you
I won't worry about tomorrow
For it brings me one more day
Closer than I was to you
Now the question isn't "will you"
What I want to know is "when"
If it's one day or a million
I will wait for you 'til then...
("It's Alright" recorded by Third Day.)