Is this an abusive relationship?

That is one that can't stay. It will be hard to get him away from her just because that is his first ual partner. He also will stick up for her more because if he disagrees with her she can deprive him of . Right now you can't do anything but talk to him and find her weaknesses then play off those. I would say that he will eventually find out and get over it but he may not. And everytime they have a fight show him that there are other girls that won't treat him like c. She also sounds like the kind of girl that won't get married. If you are not affraid of standing up for someone or confrontation if she hits him in front of you remark on it so that he knows its not ok and make it sound like he would stand up for himself. Hope thus helps.