My ex-wife is the definition of class. I, on the other hand, am a pig. She gave me two ultimatums several years ago. Quit gambling and keep my d**k in my pants. I knew that I wasn't going to give up either one, never mind both. I packed my stuff and moved out. Our divorce was final a couple months later. Cutting me loose was the best thing she ever did.
So why did I try to tap anything that was moving? My wife was (and still is) a complete hottie. It was never about her looks or our sex life. For me it was about variety, the thrill of some new snatch and the possibility of getting caught. It was part of living on the edge which is pretty much the way I've lived my whole life.
We're guys and we're pretty much going to do what we're going to do but I will say a few things about running around. There's a pretty good chance you'll get caught. Even if you don't, your wife will usually know something is going on. Women have that radar and there's so many signs that let her know you're up to something. She'll either live with it or confront you about it. Either way, it's something that she'll always think about and it will be difficult for her to trust you after that.
Life is about choices and I've certainly made my share of bad ones. If you choose to cheat on your wife, then you have to realize that choice may lead to some decisions you'll both have to make at a later time if she catches you.