If you go to a search engine and search "quotes" or "wedding vows" that might work. What about words from a favourite song?
Check out www.ultimatewedding.com
They have all sorts of ideas and they also have vows, both traditional and modern.
I particularly like this one:
We will forever love one another and to share our most intimate thoughts.
Promise to hold and cherish and value each other.
We will live each day as if our last, vowing to never go to bed angry.
If sorrow enters our life as things sometimes do ,we pledge to one another that together we will see things through.
As we grow old and we slowly begin to change we will look into each others eyes and know that what we have will never go.
That with each breath we take ,our love will grow .
These are the words I feel and speak from my heart.
Hope you are as happy in marriage as I am.