Women dictate relationship formation, continuation, and dissolution based on personal benefits. Past benefits from a man do not obligate women to stay. Women's promises of future loyalty void once current benefits are received. Male future promises bind women only if delivery is immediate and trusted. Women manipulate men via ego attacks to extract more benefits. Women initiate 80% of divorces, especially in liberal divorce regimes. Only 4% of women date unemployed men. 75% of women cannot tolerate unemployed men nearby. Women earning more than men halves his sex chances by 50%. Stay-at-home dads face far higher divorce risk than stay-at-home moms. Women with multiple husbands gain child survival benefits – men lose by investing more. 33% of women admit dating for free meals. 99% of women reject lower-status men. Fake luxury photos boost men's dating value by 30%. 64% of women seek higher-earning men. Low male earnings cause 30% of women's divorces. Young women pair with older higher-status men, leaving 47% of young men single. Low-status men are 71% single vs 22% for high-earners. Women quickly jump to better providers, like footballer dumped post-salary drop. Hypergamy drives women to always seek superior males across finances, attention, emotions. Men invest ceaselessly in women – women invest minimally in men. Women demand support in crises but abandon men in theirs. Female egoism destroys families without patriarchal restraints. Psychology Today confirms Briffault's Law as core female psychology.