There are many reasons for infidelity such as revenge, boredom, the thrill of sexual novelty, sexual addiction. But experts say that a large majority of the time, motivations differ by gender, with men searching for more sex or attention and women looking to fill an emotional void.

Why do affairs happen?

Affairs: Why They Happen. There is seldom just one reason for an affair. The state of your relationship, the stresses and pressures of your life (finances, kids, job loss, depression, etc.), and your personal belief systems can all influence your vulnerability to an affair.