u/asklepios7

Studies and experts have consistently shown that a higher number and/or permissive sexual attitudes is related to infidelity and relationship dissatisfaction/instability. Women find men who sleep around to be undesirable long-term partners too, though they find men with past same-sex experiences and no experiences to be even more repulsive than men do for women.

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Study: Re-Examining the Link Between Premarital Sex and Divorce (Journal of Family Issues, 2024)

> The key results here are mostly consistent across models: those with the highest number of premarital sexual partners as of Wave III (nine or more) have about triple the odds of divorce compared to those with none (ORs = 2.65—3.20). Notably, this effect becomes stronger as controls are added to the model, indicating such hypothesized selection factors as sociodemographic or religious characteristics actually suppress, rather than help explain, the effect of premarital sex for those with the highest number of partners. Those with one to eight partners are also at greater risk of divorce, though this coefficient is weaker than for those with nine or more partners. Specifically, in the full model the odds of divorce for those with one to eight partners are 64% higher than those with no premarital partners (10/23)

> As expected, we find evidence of a nonlinear relationship between the number of sexual partners and the risk of divorce. Those in the highest category of partners (9+) consistently show the highest divorce risk by a substantial margin, followed by those with one to eight partners, with the lowest risk for those with none. In other words, we find distinct tiers of divorce risk between those with no, some, or many premarital, nonspousal sexual partners… although partner counts of eight or less have become increasingly normative, having more partners may indicate distinctive characteristics which are not conducive to marital stability. (16/23)

https://journals.sagepub.com/doi/pdf/10.1177/0192513X231155673?download=true

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Review: Predictors of infidelity among couples (Journal of Sexual Medicine, 2024)

> Individuals who have a more unrestricted sociosexual orientation (ie, greater motivation and willingness to engage in casual, uncommitted sex) are more likely to engage in infidelity (1/4)

https://www.researchgate.net/publication/379535030_Predictors_of_infidelity_among_couples

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Review: Love and Infidelity: Causes and Consequences (International Journal of Environmental Research and Public Health, 2023)

> Personal characteristics such as neuroticism, prior history of infidelity, number of sex partners before marriage, psychological distress and an insecure attachment orientation, as well as permissive attitudes toward sex, have been positively associated with infidelity (10/19)

https://pmc.ncbi.nlm.nih.gov/articles/PMC10002055/pdf/ijerph-20-03904.pdf

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Review: Mate Preferences and Their Behavioral Manifestations (Annual Review of Psychology, 2019)

> Men apparently assess and evaluate levels of sexual activity by a woman prior to long-term commitment—behavior that would have been observable or known through social reputation in the small-group lifestyles of our ancestors. Past behavior is a good predictor of future behavior, and having a large number of sex partners prior to marriage is a statistical predictor of infidelity after marriage (16/34)

https://www.annualreviews.org/docserver/fulltext/psych/70/1/annurev-psych-010418-103408.pdf

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Review: Infidelity in romantic relationships (Current Opinion in Psychology, 2017)

> Table 1: Factors found to facilitate infidelity.

> - Number of sex partners: Greater number of sex partners before marriage predicts infidelity

> - Attitudes: Permissive attitude toward sex; Decoupling of sex and love, closeness; Willingness to have casual sex

> Numerous individual characteristics have been associated with infidelity, including personality variables such as neuroticism, prior history of infidelity, number of sex partners before marriage… As might be expected, attitudes toward infidelity specifically, permissive attitudes toward sex more generally and a greater willingness to have casual sex and to engage in sex without closeness, commitment or love (i.e., a more unrestricted sociosexual orientation) are also reliably related to infidelity (2/5)

https://fincham.info/papers/2016-infidelity-cop.pdf

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Study: The Relationship between Sexual and Emotional Promiscuity and Infidelity (Athens Journal of Social Sciences, 2017)

> Sexual promiscuity was significantly positively correlated with emotional promiscuity [r(356) = .261, p < .001], as well with sexual infidelity [r(323) = .595, p < .001] and emotional infidelity [r(323) = .676, p < .001], indicating that sexually promiscuous participants also tend to be emotionally promiscuous, and sexually and emotionally unfaithful. (6/14)

> In terms of the sexual domain, results showed that there is also a positive correlation between sexual promiscuity and sexual infidelity, stating that individuals that tend to be more sexually promiscuous also tend to be more sexually unfaithful. (9/14)

> Additionally, results demonstrated that sexual and emotional promiscuous individuals, also tend to be sexual and emotional unfaithful, being all these domains related to each other. (11/14)

https://www.athensjournals.gr/social/2017-4-4-3-Pinto.pdf

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Book: Cheap Sex: The Transformation of Men, Marriage, and Monogamy (Oxford University Press)

> When compared with their peers who report fewer partners, those who self- report 20 or more in their lifetime are:

> - Twice as likely to have ever been divorced (50 percent vs. 27 percent)

> - Three times as likely to have cheated while married (32 percent vs. 10 percent)

> - Substantially less happy with life (p < 0.05) (pg.89)

https://archive.ph/x1xb5

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Book: The Evolution Of Desire: Strategies of Human Mating (Basic Books, 2016)

> Indeed, the single best predictor of extramarital sex is premarital sexual permissiveness—people who have many sex partners before marriage tend to be more unfaithful than those who have few sex partners before marriage (pg.108).

https://archive.ph/k554y

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Study: Sowing wild oats: Valuable experience or a field full of weeds? (Personal Relationships, 2013)

> The research objective was to test whether the number of sexual partners was associated with sexual quality, communication, relationship satisfaction, and relationship stability, while controlling for relationship length, education, race, income, age, and religiosity, using the two competing theories of sexual compatibility and sexual restraint. The results, with a sample of 2,654 married individuals, indicated that the number of sexual partners was associated with lower levels of sexual quality, communication, and relationship stability

https://files.catbox.moe/xs43ja.pdf

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Study: Beyond Global Sociosexual Orientations: A More Differentiated Look at Sociosexuality and Its Effects on Courtship and Romantic Relationships (Journal of Personality and Social Psychology, 2008)

> Sociosexual Behavior

> The behavior component, reflecting the quantity of past short-term sexual encounters, shows strong and unique links to the diversity of past romantic and sexual relationships, as well as the occurrence of sexual infidelity… Our results also confirmed the prediction that men and women who had more experience with short-term relationships in the past (i.e., those with high Behavior facet scores) were more likely to have multiple sexual partners and unstable relationships in the future. The behaviorally expressed level of sociosexuality thus seems to be a fairly stable personal characteristic. (19/23)

https://www.larspenke.eu/pdfs/Penke_Asendorpf_2008_-_SOI-R.pdf

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Study: Predictors of young dating adults’ inclination to engage in extradyadic sexual activities (British Journal of Psychology, 2005)

> Participants who had experienced sexual intimacy with a greater number of partners also reported greater extradyadic sex and extradyadic kissing inclination. (14/20)

https://files.catbox.moe/e4w951.pdf

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Study: Sex differences in morphological predictors of sexual behavior (Evolution and Human Behavior, 2003)

> The high correlations for males (r = .85) and females (r = .79) between reported numbers of sex partners and EPC partners may bear on questions of both paternity and abandonment in the face of infidelity… But the question remains: does promiscuity predict infidelity?… The resultant number (reported non-EPC sex partners) was still highly correlated with number of EPC partners (females: r = .67, n = 56, P < .01; males: r = .50, n = 59, P < .01), suggesting that promiscuity is in fact a good predictor of infidelity. Indeed, promiscuity among females accounted for almost twice as much variance in infidelity (r² = .45) as it did for males (r² = .25). (5/6)

https://www.psy.uq.edu.au/%7Euqbziets/Hughes2003%20-%20Shoulder%20to%20hip%20ratio.pdf

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Sexual Infidelity Among Married and Cohabiting Americans (Journal of Marriage and the Family, 2000)

> H2a. Having had more sexual partners previously is associated with a greater likelihood of infidelity. (3/13)

> As we hypothesized, people with non-permissive values were less likely to engage in sexual infidelity. Considering sexual opportunities, we found evidence that prior sexual experiences were positively associated with infidelity. (11/13)

https://www.healthymarriageinfo.org/wp-content/uploads/2017/12/Sexual-Infidelity-Among-Married.pdf