Xkcd age dating
I wonder if anyone out there cares to clear up this controversy.
I am sure your paper would fly for giving credit where credit is due: Anyway, back to the graph.
After you're past the age of about 25 or 30, honestly I think you know better than some formula what is or is not a good idea.
Men may not like this trend but it's happening with or without their approval.
As Society Marched On, this became less and less the case, and in modern works a very small age gap is often considered ideal, with a maximum allowable (as opposed to "ideal") age gap proposed, and often applied equally in either direction (older man vs. One commonly-applied formula is the "half your age plus seven" rule, in which the older partner's age is divided by two and then increased by seven to reach either the ideal or minimum allowable age for a romantic partner.
Traditionally, a man was expected to be established in his career and lifestyle before marriage, whereas a woman usually transferred directly from her father's household to her husband's within a couple years of reaching adulthood, so it was considered ideal for the man to be at least somewhat older.
(The genetics of sex ratio are a very interesting story, which I will cover at some point).
However, men are stupid, risk-taking fools whose bodies tend to degenerate faster, thus women tend to live, on average, six years longer than men.