It's significantly easier for women to cheat whereas the only time men are able to is when another woman encourages him do so.

This isn't to say that men shouldn't be blamed when their infidelity is discovered, but it's also rather surprising that I rarely see woman go after the other women when they tried to flirt or go after her boyfriend / husband.

If you are an average guy who isn't interested in hookup culture / polygamy and just want someone who will ride and die with you. It'll take an extraordinary amount of effort, money, and luck to ask a girl out, court her, sleep with her, and if you get extremely lucky, put it inside of her or (depending on how you look at it), marry her. Most are lucky to have one partner after failing and repeating these steps over and over again while most do not have any at all.

If you are above average man, you get to skip some of these steps, but unless you plan on pumping and dumping her, then you still have to be supportive and there for her every step of the way or she'll get bored of you and eventually leave you because you aren't adding any value to her life.

If you are among the Chadest of all Chads, the 1%, none of this applies to you, but just for convenience's sake let's just use guys between average and above average.

None of these men ever have the opportunity or time to cheat by themselves, which is why, other women are by in large responsible for reaching out to them and asking them how their current relationship is working out or if they are considering them as a backup option if it doesn't. These people are often acquainted or related to the woman they are dating in some way or another but there are also those who get a thrill with taking someone else's lover for themselves.

If a woman wanted to cheat, all she would have to do is call off sick for work that morning, open up tinder, and she would have more sausages inside of her than a neighborhood barbeque by the time her husband came back.

The only way you would be able to prevent this outcome would be to monitor her everyday movements like a hawk, but then you'd probably just get dumped for being too possessive and controlling anyways.