Infidility is really common in todays modern society as it involves cheating where partners are being lied to, to satisfy their own needs by sleeping around or spending quality time whether sexual or not.

This article shows that it is a very common that infidility occurs as it happens in celebraty lifestyles.

http://www.independent.co.uk/news/uk/this-britain/can-a-relationship-ever-survive-infidelity-our-experts-comment-465949.html

I believe that this type of behaviour is bad because it can cause alot of issues and can traumatise individuals which could even lead to suicide or depression.