<P> Another example illustrating the varying literature surrounding age - hypogamous relationships is research indicating that a woman's marital status can influence her likelihood of engaging in age - hypogamous relationships . It has been found that married women are less likely to be partnered with a younger male compared to non-married women in comparison to more recent findings, which provides evidence to suggest that previously married women are more likely to engage in an age - hypogamous sexual relationship compared to women who are married or who have never been married . </P> <P> Despite social views depicting age - hypogamous relationships as short lived and fickle, recent research published by Psychology of Women Quarterly has found that women in age - hypogamous relationships are more satisfied and the most committed in their relationships compared to younger women or similarly aged partners . It has also been suggested that male partners to an older female partner may engage in age - hypogamous relationships due to findings that men choose beauty over age . A recent study found that when shown pictures of women of ages ranging from 20--45 with different levels of attractiveness, regardless of age, males chose the more attractive individuals as long term partners . </P> <P> The "never date anyone under half your age plus seven" rule is a rule of thumb sometimes used to prejudge whether an age difference is socially acceptable . Although the origin of the rule is unclear, it is sometimes considered to have French origin . </P> <P> In earlier sources, the rule had a different interpretation than in contemporary culture, as it was understood as a formula to calculate ideal age for the bride, instead of a lower limit for the suitable age . Max O'Rell's Her Royal Highness Woman from 1901 gives the rule in the format "A man should marry a woman half his age, plus seven ." Similar interpretation is also present in the 1951 play The Moon Is Blue by F. Hugh Herbert . </P>

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