Having issues with boyfriend's cousin. Whats your opinion?

I totally understand how you are feeling right now. That happened to me with my ex boyfriend as well. THe thing is that its your choice whether or not if you want to break up with your boyfriend because of this suitation. Yes, I can tell you that you should break up with him because in the long run ,he will do this again and again, but its your decision . Also, think about the future. If you marry him, then you will have to see your boyfriend's cousin and are you okay with that? Talk to him about this suitation and make him make promises to you and see if he keeps those promises. If he doesnt then you should re consider about going out with him.