The general conclusion was that a man would only cheat physically and then return home and to the woman he really loved, thus showing that the cheating was simply a sexual intercourse, a repulsion, a need of his. While the woman on the other hand was still in love with her ex, she kept photos of him secret in her house and did not hesitate to go out with him. Even if she never physically cheated on her husband, because as she said "I'm married", isn't it worse that she was in love with someone else ???
So I searched and found a search for the reasons why a man cheats and the reasons why a woman cheats. The study was conducted by Robin Milhausen, a sex researcher at the University of Guelph in Ontario. The study involved a total of 918 heterosexual men and women who were in a monogamous relationship. The survey revealed that 23% of men and 19% of women admitted to cheating on their partner. Researchers have identified infidelity as a sexual act with someone who is not your main partner and which could damage your relationship.
Research has shown that women cheat on their partner if they are not satisfied with their relationship. Women who are unhappy in their relationship are 2,6 more likely to cheat on their partner than women who are happy in their relationship. Also, women who have different sexual beliefs from their partner are 2,9 more likely to form an illicit bond.
As for men, it has more to do with their pride and ego as research has shown that those who have more performance anxiety then cheat more easily. Men also believe that if you have sex with someone outside of your relationship, then you never need to see that person again.
Research has shown that for both sexes, people who care less about their sexual behavior are more likely to cheat on their partner. Milhausen stressed that people who want to be faithful in their relationship must be honest about what their needs are. Finally, he considers that an important question that must be asked in relationships in order not to reach the point of infidelity is the following: "What do you need to be happy in this relationship?"
For his part, Dr. Thanos Askitis, a sexologist, states that infidelity with other people is considered infidelity and not only sexual intercourse. He also adds that people (married or in a relationship) who are looking for sex outside of their relationship is because they feel bored and lonely in that relationship. In conclusion, he states that infidelity is never forgiven, it is just a retreat, a compromise.
Source: Washigtonpost.com