"Now we have choices." But these relationships aren't always portrayed in a positive light.
Terms like "cougar" (slang for an older woman seeking a younger man) depict the woman as a predator, rather than an empowered, independent and loving person.
A study released in 2003 by the United Kingdom's Office for National Statistics concluded that the proportion of women in England and Wales marrying younger men rose from 15% to 26% between 19.
The study also showed a higher divorce rate as the age difference rose when the woman was older and a lower divorce rate as the age difference rose when the man was older.
In a classic study of human mating from 1989, David Buss surveyed 37 cultures across 6 continents and found that in every culture in question, men preferred to marry younger women (2.66 years younger on average) and women preferred to marry older men (3.42 years older on average).
In addition, Buss collected actual age differences at marriage for 27 of the 37 cultures, and across the board men normally married women who were younger than themselves.
That is, unless you just assume she is his daughter.