Significant age disparity in sexual relationships has been a feature of couples in many
cultures and
societies. The most common pattern in
heterosexual couples is an older man with a younger woman. This may be brought about as an
arranged marriage, or either member may pursue and initiate the relationship. Situations involving a younger male with an older female also exist, and while not as common are considerably more common in recent years.
Homosexual relationships of both sexes are also found. Age disparity in extreme cases may be seen as dysfunctional (a
paraphilia) if such relationships are pursued to the exclusion of all others and to the detriment of the partners. The term alphamegamia can be used when a person is sexually aroused by partners of a different age group, and "
chronophilia" can describe a sexual fixation on members of a different age group.
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