The term is a cuckold.
Gullible-adjectiveeasily deceived or cheated.
Probably to comfront him/her.But,if that man/woman is abusive then you need to call the police or tell someone.Roman Catholic AnswerYou need to speak with a priest about this. Normally, you need to forgive people, including a "person who cheated on you". If this is your spouse, then you need to speak to a priest in order to start the healing process. It this is not your spouse, then I would question your use of "cheated on you".
If you are asking what you call a person who had sex with someone outside their marriage, if a man does it, he's an adulterer. If a woman does it she is called an adulteress.
You would call a person who praises himself a lot a narcissist.
Usually you would call the person a reader.
Usually you would call the person a reader.
You would call them a Nepalese
I would call a person with many boyfriend a person with many boyfriends.
Like you would call any other person.
I would call such a person inhospitable.
sacrifice