Is cheating important in a relationship?

Why do husband's cheat? My husband cheated on me 3 to 4 times. I always confronted him but he always says sorry and after some time he starts again. He has never said no to responsibilities, he does everything for family. I thought of divorce, but as I belong to typical hindu family they are against divorce. I don't have any other option rather than staying with him. I don't have any clue what to do in this case. I am not able to take any help from family and friends.
Is cheating important in a relationship?
Is cheating important in a relationship?
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