Infidelity refers to betray someone by overstepping your mutually-decided boundaries when you are in a relationship. Infidel people cannot be loyal to others and they betray other’s trust, when you ditch your partner and have sexual activity with someone else. Infidelity in marriage is also referred to as adultery or affair while in interpersonal relationships, it is called “cheating”. In the words of Thomas Paine, “It is necessary to the happiness of man that he be mentally faithful to himself. Infidelity does not consist in believing, or in disbelieving, it consists in professing to believe what he does not believe.”
For marriages to survive the test of time and even relationships for that matter, it is extremely necessary that the partners are loyal to each other. Infidelity ruins relationships and marriages. In the words of Katherine Anne Porter, “Physical infidelity is the signal, the notice given, that all fidelities are undermined.”