I don't think there's anything wrong with it as long you make sure your wife never finds out. You have to be sure to be completely safe about it. For example, never have sex with anyone she knows, at all, ever. Never meet the people you are having sex with in locations she would ever go under any circumstances, and preferably not anywhere she knows that you go. If you communicate online with the people you are having sex with, be computer savvy enough to cover your tracks. By the way, is this post in your browser history? Basically, just be really smart about it. Always keep in mind how unhappy she would be if she found out. If you don't want her to be unhappy, you have to put in the effort to keep the affair a secret.