A person's past behavior is a very good indicator of their future behavior. This is a known truth and why police round up all the burglars when investigating a robbery. Most of my outside non monogamous marriage sex, was with women who worked in my office. One thing I learned is that women are attracted to power and money. One even yelled out "Now I know why they call you the boss." during her orgasm. Some women are attracted to their bosses. It seems to be a thing. My best friend's wife left him for her boss. Every boss I worked for cheated with one of their employees, both male and female bosses.
I did not worry. My wife was married to her boss, me.
Then she became a real estate agent working from home. I also provided her with a lifestyle few men could plus she preferred to play with girls outside of our marriage, not men. The rate of cheating has dramatically increased due to more women in the workplace. Some spend more time talking to workmates than their husbands. Their "work husband" listens to their problems, sides with them and provides emotional support. They are treated as hot desirable women which makes them happy. Woman have been catching up with men in the numbers who cheat, every year. I do not want to get into lecture mode again but monogamy is unnatural and does not work for many. We have a divorce rate of 50% because monogamy breeds an almost viral tendency to take the other person for granted, to have huge expectations, and to deliver this all from a sense of duty and obligation — without a thank you! This means unhappiness and resentment of each other.
Putting a woman in a situation where there are alpha males with all the trappings of success, ups the odds that they will cheat. Re-read my first sentance. That is a basic psychological truth. Women are genetically attracted to males that have the best genes and since hunting and fighting are no longer needed, they are attracted to men with power, money, good looks and a sense of humor that makes them laugh; the modern equivalent. Most women put sense of humor on the top of their list. Who doesn't want to laugh most days of their life. Your wife needs to work in a place where she is not surrounded by alpha males who have the qualities women are attracted to. Either that or just look the other way on her cheating. Sounds funny? I dated three married women at work who had been cheating for as long as 10 years with multiple guys, who got caught and forgiven a few times. Their husbands decided to look the other way rather than accept the alternative. I often socialized with one of those husbands and he knew his wife was my girlfriend. It takes all kinds.
I dumped my fiancee of 5 years for cheating on me 6 months before the wedding. She was the one who wanted to be monogamous, not me. So I agreed and she went ahead and cheated on me. I could not live with a wife who I could not trust and is a proven liar, as well as someone who has shown me to be unworthy of trust. I bet every time she comes home late or acts differently it eats you up inside. I will guess that her infidelity would come up in arguments. Trust takes a very long time to regain and even then, it will never be the same as before. Your wife will resent you not trusting her and may send her into the arms of another man. That is no way to live.
One last thing, the married women I knew who cheated on their husbands went on to cheat over and over again. They did not stop as promised. They just got better at hiding it.