Deviance is a very difficult concept to explain, in a bubble deviance is just the detour of social norms and behavior. The concept of deviance is more often attributed with sexual deviance. Cheating on your spouse or having multiple partners, mainly any act between a couple that isn't considered normal in societies eyes. Who's to say what is considered normal. Societal norms change between countries, states, and may even change between social groups. But across the globe there are many forms of formal and informal social control. Formal social control are state law enforced by trusted authorities. Police are the most notable example but employers are as well as security, mall cops, and military officers. They only vary in power and in punishments