*Any Nigerian Women on Here?

Please advise me. I am a black American woman in a relationship with a Nigerian man. We share a son together but we are not married. He is very disrespectful and sometimes I will respond in anger and he says a Nigerian woman would never do that. This current argument is about a girl he keeps cheating with and he says it is my fault and that I should not be yelling at him. As if I’m supposed to accept it…….that a Nigerian woman would never do that. So you mean to tell me as a Nigerian woman that you all allow your men to cheat freely, yell at you and tell you it’s your fault, talk down to you and you all say nothing???? Please help me to understand. If that is what’s expected of me, then I don’t want it and he can have his Nigerian women.