Q: I had a question about marrying a second wife? I told my wife I wanted to marry another wife and she said I would need to divorce her first? She would not accept that second marriage! What is the ruling on this?
A: If she feels that it is going to be difficult for her and on account of this you will also feel uncomfortable because of her discomfort then the better thing is to separate.
And Allah Ta’ala (الله تعالى) knows best.