Re-Post 
They do it for love. They do it for sex. They do it to feel beautiful and boost their self-esteem.why women get married, but why women cheat on the men they have married.
Female infidelity is not a new phenomenon, but it is a fact of life that many people, including women, don't want to acknowledge. While the cheating man has long been the subject of boasts, jokes, novels and movies, the unfaithful woman is now getting more attention and scrutiny. And justifiably so. Whereas decades ago, the unfaithful wife was a rarity, an abnormality, today's missus is more likely to cheat than her predecessors.
The first reliable estimate concerning infidelity was made in 1953 by renowned sex researcher Alfred Kinsey, who in his landmark study found that 50 percent of husbands and 26 percent of wives surveyed had cheated by age 40. However, in recent years, women have been catching up to men. A 1997 Ball State University study suggests that young women, those under age 40, are just as likely to commit adultery as men their age. Among older couples, the stereotype of men being more likely to stray holds true.
Sex researchers agree that today more women are committing adultery. At the same time, more and more women are working outside the home alongside men, oftentimes in office environments that are charged with sexual electricity. In addition, some studies show that the more sexual partners a person has before marriage, the more likely she or he is to cheat on a spouse.
