Why do men lie? How to recognize he lied and what to do when a man lies to you. There is a myriad of reasons why men lie in relationships. There are situations in which all man lie; then there are those instances where he is lying but the reasons are psychological in nature. So, why do men lie and cheat and in the process risk their stable relationships to chase after something temporary? Things the betrayed women should not do and what to do when a man cheats…