My father came up with this or heard it decades ago. Since he was not a nice person, I always thought that he was trying to get out of being married to my mom. They were planning a divorce at the end, but she died after a decade-long battle with cancer.

I think there should be a renewal time annually for every marriage where people are encouraged to take time together and renew their commitment and vows. Otherwise, marriages can just drift, especially with the heavy toll created by careers and children.
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Casey Dawes
Wise Woman Shining
Supporting women business owners to step into their power as business leaders.