I believe that the vast majority of people that are unfaithful are monogamous in their beliefs. The ones who are not monogamous in their beliefs either live in poly relationships or consensual non-monogamous relationships, or they have divorced. If it's very bad, then people don't stay married these days in the West. They can be married and have their family, but they want something else - they want something that they don't have in their lives, or simply to be someone that isn't who they are in the context of their marriage.
Esther PerelFor some people, the experience of sexuality is that they are entirely inside their body, but others feel they have totally transcended the physical boundaries of their body. Transcendence is the ability to no longer feel you are contained within the physical world. For many people, the definition of spiritual is a sense of complete abdication of the self. For some people, it's union with another that transcends the borders between where one stops and where the other person starts and creates a sense of infiniteness and timelessness.
Esther PerelThe meaning of secrecy is very different when the model of love is one of transparency. So to understand the politics of secrecy and revelation, you need to understand the larger culture in which the couple lives and also the culture of the couple itself. What does intimacy mean to them? Where does the couple draw the line between togetherness and separateness? That's what informs you. You always ask, "What would happen if I tell? What would happen if I don't tell?" Sometimes, the partner doesn't want to know.
Esther PerelAffairs can be powerful detonators. They can invigorate a marriage that's flat, jolt people out of years of complacency. Fear of loss rekindles desire, makes people have conversations they haven't had in years, takes them out of their contrived illusion of safety.
Esther Perel