Dudes drive females to do things just like females drive dudes to do things.

Oh he cheated on her! Oh she cheated on him! It's a reason why people do things and more than likely their partner drove them to do the thing or things they're doing. People drive people to do their dirt. People have great influences over others and some people know it and some don't. Never underestimate the value of your words and your actions and how heavy it weighs on someone's conscience. Be real with yourself about why a relationship didn't work with you and your ex and no matter what you say you played apart in the reason why that relationship is no more. Someone is always to blame for a ruined relationship.