Till recently, when effective contraceptives became available, neurotic anxiety about being unloved, unwanted, and alone likely had another fitness positive. Women suffering from it would likely have constantly needed sex to make them feel better, thus have had more children with more men than average. They may have indeed ended up as social outcasts but have left any genetic basis for their condition to more descendants.
Till recently, when effective contraceptives became available, neurotic anxiety about being unloved, unwanted, and alone likely had another fitness positive. Women suffering from it would likely have constantly needed sex to make them feel better, thus have had more children with more men than average. They may have indeed ended up as social outcasts but have left any genetic basis for their condition to more descendants.