Equal marriage for all?

[festive1]

I have no problems with plural marriages. However, all parties should be involved. By this I mean, if a man and woman are married, and the man wants to take a second wife, than his first wife should get a say, and be legally bound (married) to this second wife as well. None of this, "I'm a man, I can marry as many women as I want," (or vice versa) nonsense. Either all parties are for the plural marriage or it doesn't happen. Equal voices for equal partners.