Age difference formula for relationships?

For me i don't think that age is the formula for a relationship. but i believe age doesn't matter. if there is a formula what kind of formula that would be?

This formula doesn't apply anymore even in a conservative country like mine. I'm married to a guy whose 3 years younger than me and for almost 7 years of marriage we didn't see age as a hindrance. It has never caused us any problems at all. In fact we don't see age in our relationship at all. Age is just a number and that's what I believe. A person's maturity to handle good relationship is not dictated by age anymore. Long time ago age was a big factor especially for women because of the productive issue. The younger the woman is, the healthier she is to bear and give birth to a child. Long time ago the number of children a woman can have matters, but it doesn't anymore.

Okay, if I get what you are asking, they usually used to say that the guy should always be older than the girl. Girls mature faster than guys and so the best age difference is the guy should be three years older than the girl. Is this what you were asking about?

Apparently, the formula of age in the relationship, no longer apply. Because right now, many relationships that did not think of age.