That's nothing to do with communication or balance, domination and submission in the bedroom is entirely different to in a relationship. Two people can play dominative and submissive roles sexually but treat each other as equals with balance outside of the bedroom.

Don't have balance and you WILL have problems, at some point the other person will either get tired of you constantly passing off control and important decisions to them or they will get tired of you not allowing them control or freedom.

What goes on in the bedroom should not reflect what goes on in a relationship. I've known girls that enjoy various forms of somewhat extreme role-play. Does that mean I should act like that outside the bedroom with them? NO.

That said, balance in the bedroom is important too. Girls love it when you throw them about like that because of the validation received in feeling wanted THAT much. However being like that all the time is going to get stale, the majority of people that enjoy being at the end of one extreme also enjoy being on the other side of the fence just as much by pushing their man around. People that enjoy being tied up and blindfolded enjoy tying the other person up and blindfolding them. Etc etc etc.