Contributor RosieG wrote: "He cheats on his mate with you. He divorces her to marry you. He cheats on you too."
Just as all human beings are similar where prone to "cheating" whether male or female, they are likewise similar where "loyal" whether male or female.
If she really wants to obtain logical, common sense responses, rather than display a rant, she will first need to provide objective-sources such as accurate surveys, showing that one of the sexes is more prone to cheating than the other; I doubt that is so.