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There is much historical evidence that male-male intimacy has declined with the acceptance of homosexuals. For example it used to be not uncommon for heterosexual men to exchange love letters.{{citation needed}} Further, heterosexual men in Western countries used to hold hands, and boys used to cuddle more often. Plausibly these activities acted as costly dominance signals as well. John Ibson documented this change with hundreds of photos taken throughout the past century.<ref>https://www.press.uchicago.edu/ucp/books/book/chicago/P/bo3771153.html</ref> | There is much historical evidence that male-male intimacy has declined with the acceptance of homosexuals. For example it used to be not uncommon for heterosexual men to exchange love letters.{{citation needed}} Further, heterosexual men in Western countries used to hold hands, and boys used to cuddle more often. Plausibly these activities acted as costly dominance signals as well. John Ibson documented this change with hundreds of photos taken throughout the past century.<ref>https://www.press.uchicago.edu/ucp/books/book/chicago/P/bo3771153.html</ref> | ||
Explanations include that the expectation that men can be gay increases the fear that other men could be gay and thus male intimacy could lead to a greater risk of being regarded as gay (male intrasexual competition). | Explanations include that the expectation that men can be gay increases the fear that other men could be gay and thus male intimacy could lead to a greater risk of being regarded as gay (male intrasexual competition). Also with decreasing gender segregation appears to incite male intrasexual competition.<ref>https://www.sciencedirect.com/science/article/abs/pii/S1053535711000321</ref> | ||
== Other explanations of homosexuality == | == Other explanations of homosexuality == |