We had two that I loved
First (because I love the imagery of this)
Love is a temporary madness; it erupts like volcanoes and then subsides. And when it subsides you have to make a decision. You have to work out whether your roots have so entwined together that it is inconceivable that you should ever part. Because this is what love is. Love is not breathlessness, it is not excitement, it is not the promulgation of eternal passion. That is just being in love, which any fool can do. Love itself is what is left over when being in love has burned away, and this is both an art and a fortunate accident. Those that truly love have roots that grow towards each other underground, and when all the pretty blossoms have fallen from their branches, they find that they are one tree and not two.
Louis de Bernieres, Captain Corellis Mandolin
Second
Blessing of the Apache
Now you will feel no rain, for each of you will be shelter for the other. Now you will feel no cold, for each of you will be warmth to the other. Now there will be no loneliness, for each of you will be companion to the other. Now you are two persons, but there is only one life before you. May beauty surround you both in the journey ahead and through all the years. May happiness be your companion and your days together be good and long upon the earth