Slate: It isn’t true that people transgress because something is actually missing?
Perel: We don’t know the exact numbers because people lie about sex and 10 times more about adultery. But the vast majority of people we come into contact with in our offices are content in their marriages. They are longtime monogamists who one day cross a line into a place they never thought they would go. They remain monogamous in their beliefs, but they experience a chasm between their behavior and their beliefs. And what I am going to really investigate in depth is why people are sometimes willing to lose everything, for a glimmer of what?
Slate: And what’s your best guess from your research so far?
Perel: I can tell you right away the most important sentence in the book, because I’ve lectured all over the world and this is the thing I say that turns heads most often: Very often we don’t go elsewhere because we are looking for another person. We go elsewhere because we are looking for another self. It isn’t so much that we want to leave the person we are with as we want to leave the person we have become.
Read it all (my emphasis).