Women are okay with sharing one desirable man (polygyny). It has been that way since humans exist, as evidenced by the different rate of reproductive success for men and women respectively, as recorded in our genome. This is stable from a biological and social standpoint, if the social environment is how we spent the last couple of hundreds of thousands of years: in clans and tribes, size below Dunbar's number. If you look closely, polygyny is making its comeback since the end of enforced monogamy.

For modern society, this return to acting out the ancestral environment makes everything unstable. I predict in my lifetime for depression and suicide to be overtaken in number by extreme bouts of violence and riots.