he who is sincere, really loves you, must feel bitter because you cheated on him

You often excuse yourself to go out to meet other men, and he knows that, but for some reason, he can't get angry with you because of his gentle nature, he never even raises his voice at you

until in the end he was really hurt after you came home smelling of a man, who clearly wasn't him, your hair was a little messy

What would you do?