There are some reasons or things that can make a man to cheat on his partner. Below are some of those think that can make your partner chest on you.

1. Lack of communication. Lack of communication can make one to cheat on his or her partner. When there is little or no communication at all in a marriage, it can make one person to go out and seek refuge in another person.
2. No common interests. This is another thing that makes married people to look for another partner. When you notice that you and your partner has no common interests, you may begin to feel bored and this may lead to you going to look for another partner.
3. No chemistry. This is another reason why most married cheat on their partners. You no longer feel what you used to feel when you both were dating and you are beginning to lose interest. Maybe when you both were dating he used to buy you flowers but he does not any longer and you are suddenly beginning to lose interest.
4. When you are not satisfied. Not being satisfied is another reason why most married couples cheat. When you are not satisfied with your partner, you tend to cheat on them.