Why is it that in a marriage a man should be older than the woman

Question: Why is it that in a marriage a man should be older than the woman
- Keywords:
  marriage
Asked by Janel to Byron, Esther, Jacquie on 14 Jul 2017.
- Jacquie Oliwa answered on 14 Jul 2017:
  
  Hi Janel,
  There’s lots of happy couples where the woman is older than the man..remember age is nothing but a number 😉
  Here’s a link of lots of famous couples with as many as 16yr age difference!
  https://www.popsugar.com/celebrity/Famous-Women-Younger-Men-Pictures-36267077
  
  Best,
  Jacquie

Question: Why is it that in a marriage a man should be older than the woman