Anthropology is the study of cultures what learned behaviour we receive from our environment and the physical biology of cultures and subcultures. (The show Bones on television is a forensic anthropology based drama that gives many interesting facts mostly centered on the biology side.) Culture includes things like music, art, religion, social structure. Norms are the behaviours which are acceptable for a person fulfilling a role in a culture. Gender roles are the set of norms acceptable for a gender. Now within America or any other nation there is a mainstream culture which is shared by the majority and subcultures which exist inside mainstream or outside of mainstream. Some subcultures are even counterculture. Holding a completely different set of norms than the mainstream culture.
Our culture as Americans in a male centric because of our root in Western European countries. Likewise it's also the reason the mode of our music is scaled and its the reason we still find female breasts sexualy attractive. Until World War I, men worked at a job while the women were required to work in a less appreciated role mainly child care, food and house management. Women were not allowed to study beyond a certain level. They could not even vote until suffrage was granted in 1929. If you think that was bad the history of female sexuality is more harsh. While mainstream American culture did at one time require men to be somewhat chaste but never to the degree which women were required. Throughout all American history female prostitutes have played an hidden and despised but accepted role in society. Only recently have male prostitutes become available for women. In the 1920s casual sex become available for women but it was very counterculture.
The sexual revolution of the 1960s and 1970s changed mainstream America in many ways. It normalized casual sex and many other things. It brought feminism and other changes for female and male sexuality. At that point women who had multiple partners were no longer social outcast or had to keep their sexuality hidden for fear of complete ostracism. Still though there remains a stigma to female sexuality as it is not as liberal in mainstream culture as male sexuality.
In female centered cultures, (Matriarchal rather than Patriarchal) female sexulaity is treated very differently. The Mosuo Matriarchy in southern China have a very liberal sexual attitude where sex is very frequent they have no marriage (except that which is used as a threat to children). They sometimes have monogamous relations as long as they love each other then they move on to other partners.
Other functioning societies have non monogamous relationships with a single woman and multiple male husbands called Polyandry.
Biology gives women many incentives to have multiple partners. Women are far more evolved than men in terms of ability to have multiple partners and receive pleasure. Males have only the primary sexualy pleasing organs of penis, scrotum and prostate. Women have their breasts, labia, G-spot (vagina) and the highly evolved for pleasure clitoris. Most men are physically incapable of multiple orgasms without sexual stimulants like viagra because of the biologically mandated refractory period. Women have an undetectable refractory period and after they have one male partner they can easily be stimulated by another. You can read this psychology article about the comparative feelings of the pleasure organs.