My dearest ________,
it was 25 years ago that we first pledged our commitment to one another, but it seems like just yesterday that I was standing across from my beautiful bride/handsome groom.
We have been through a lot together - laughter and tears, joy and sorrow - and through all those times, I can honestly say, I loved you every step of the way.
Today, I want to renew those vows and again pledge my love and life to you. I promise to be there for you in sickness and health, in middle and old age, in good and bad hair days. Whether you feel thin, fat, beautiful, ugly, fit and trim, or out of shape I will always think that you are perfect - perfect for me. I am here to be your supporter, your confidant, and your best friend. You are my (nickname or other). I have been blessed for the last 25 years and am thrilled that I get to spend the rest of my life with you. I love you.