Unfortunately, cheating is not uncommon in the modern world, and it happens even in long-term marriages.
There are common cases when the home wrecker is the spouse's best friend.
Let's figure out what are the 3 main reasons that lead to such a development of events.

Why does a man cheat?
The first reason leading to cheating is a feeling of superiority. That is, when personal life is arranged, a man can begin to resist and consciously want to break the boundaries in which he is.
And if a woman is friends with a single friend, encouraging her husband to help her, then everything can eventually result in an affair.
The second reason is mistrust on the part of the wife. If a man is constantly suspected and not trusted, everything may end up going according to the scenario that the woman has drawn in her head.
And the object of the affair becomes some friend who often visits the married couple’s home.
And the third reason is a turning point in a relationship that has long been on the rocks. Such couples are characterized by external well-being, happy photos on social networks and joint vacations.
A man who is happy in a relationship is unlikely to have an affair. However, if the family is already falling apart, a close friend simply becomes neither the best nor the worst candidate for finding happiness on the side.