This hidden part is called the psychological shadow .
When a person learns to recognize that part of themselves, to accept it and work with it, they become more emotionally mature. But when that shadow remains repressed or denied, it can manifest itself in destructive ways.
One of those ways can be infidelity.
This does not mean that all men are unfaithful, but rather that men who have not worked on their inner world are more likely to act in contradictory ways
Emotional fragmentation in some men
Dictionaries& Encyclopedias
Many specialists explain that, psychologically, some men function as if several parts of their personality were acting at the same time
We can simplify it into three dimensions:
1. The social person
He is the man who shows the world:
responsible, kind, hardworking and committed.
It is the part that can truly love you.
2. The shadow
It is the side that holds repressed impulses, impulsive desires, rebellion, or insecurity.