I have been divorced once, and am currently happily married. I have never been cheated on, my first marriage had other problems, but both my mother and sister were cheated on. I have watched them over the years, and I see such a huge difference between them and myself, and I really think that it is significant. Both of them looked at marriage as something they needed to be valid / valued as women / people. When they were cheated on, it was obvious that they were so dependent on being that person's wife that there would be no real consequences to getting caught, other than alot of ugliness, which can be avoided simply by ignoring the other person. If I were cheated on, I would act very selfishly about it. Here's what I would do: wait until the cheater is home, and in charge of everything (house, kids - I have three), let them know I am going on a little vaca, and then go someplace cool, and not check in at all for at least three days. At that point, they would be terrified, and would at the very least know if you are worth keeping. That's where I would start, althought I seriously doubt the marriage would last anyway.  
 
Another thought, cheating is SO common, it's obviously a challenge to prevent. So why not use strong measures for a big threat? My husband knows I would go ballistic on him if he cheated, and frankly, if I cheated, I would fear for the guy's physical health (haha)!  
 
SO many women (and men) are trapped by: religious fears, fear of looking like a failure, financial dependencies - it just makes the temptation to cheat even stronger because the spouse knows there probably won't be a big consequence. The truth is, if you've been cheated on, the damage is already done to you personally. Hanging on, being "patient," etc, doesn't change that. Patient my butt! 
 
Just an opinion... have a nice day!!