Age disparity in sexual relationships and sexual relationships between individuals of a significant difference in age have been documented for most of recorded history and have been regarded with a wide range of attitudes, from normalized acceptance to taboo.Concepts of these relationships and of the exact definition of a "significant" age disparity have developed over time and vary between societies, and ethical systems.
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 August 2010, Michael Dunn of the University of Wales Institute, Cardiff completed and released the results of a study on age disparity in dating.
Dunn concluded that "Not once across all ages and countries ...
did females show a preference for males significantly younger than male preferences for females" and that there was a "consistent cross-cultural preference by women for at least same-age or significantly older men".
In various cultures, older men and younger women often seek one another for sexual or marital relationships.
and in both cases wealth and physical attractiveness are often relevant.
Nevertheless, because men generally are interested in women in their twenties, adolescent boys are generally sexually interested in women somewhat older than themselves.
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.
A 2003 AARP study reported that 34% of women over 39 years old were dating younger men.