Letting go means giving up the person who is not rightfully yours and doesn't love you. Setting free means losing the person who is rightfully yours and loves you, but it's not meant to be.
Which is more painful? Letting Go? OR Setting Free?
On to a related SMS:
Don't love the person that you think is right. Instead love the person that you see is true. It's easier to think what is right than to see what is true. Love is not blind -- it sees but it doesn't mind!