If I could make you happy,
Then I would gladly stay.
If I could bring you a smile so huge
As on children when they play.
If I could give you moon and stars
Oh what a love we'd have.
For only possesion of impossible things
Would make my love's heart glad.
If I could make each wish come true
Then I'd forever be in glee.
If there was some way to make you smile,
I would do it constantly.
If I could fill your heart with gladness,
It'd be an incredible feat.
But I can only bring to you sadness
And so, my love, I'll leave.

Amanda Lukas

http://www.poemhunter.com/poem/7-if-i-could/