Abstract
The twentieth century brought the greatest changes in people's sexual morality and sexual behavior. They manifested themselves primarily in the release of the connection between marriage and sex.
The secularization of society, the departure from the Judeo-Christian religious tradition, the departure from the model of the patriarchal type of the agrarian era, the model of coexistence of men and women has changed, couples raising children out of wedlock are increasing, families with only one parent or children living in two divorced families parents. There is also an increase in single-sex parental couples.
These changes are a manifestation of the shift from a family-centered society to a rather individualistic society.