Infidelity is one of the most emotionally devastating and life-changing events we can go through – whichever side of the act we find ourselves on. But cheating is also a gray area when it comes to relationships: the definitions of it can be loose, and different people’s interpretations and motivations can differ greatly. With lines blurred and definitions muddled, an expert’s advice can be all the more essential. We spoke to three relationship experts and psychologists to discover the differences in cheating when it comes to men and women, how to tell if you are being cheated on, and what to do if you are. Why do people cheat? It sounds like a simple question, but the answer is complex. As clinical psychologist Michael Kinsey, PhD explains, “Cheating is communication through action. Action is a more primitive way of communicating and, in the intricate world of human relationships, is an unwieldy, blunt instrument.” “There are any number of reasons why someone will ‘act out’ through infidelity.  Let’s distinguish between two broad categories: One is  personality-based …