Leader and Leaded
If there are the relationships, than there are two people who live together and who are building their relationships. They make decisions and they think about something and they have plans and so on and so forth. no matter on how much people are in love with each other sooner or later a question appears and people have different answers for that question and they run counter each other.
And there is always the leader and the leaded and this formula helps people to temporize and to come to a conclusion that satisfies both. Sometimes there are such situations when one has to step back and only in this case people can stop fighting and make their decision and that is why there always should be a leader and a leaded one.
In case both of people are leaders and they never let other people to lead them, than their relationships will soon be over and there will be nothing left of their love except the memories. It is impossible for two leaders to live in calm together because they never step back and they can't come to a common and satisfying conclusion because they will never let people lead them.
The leader and the leaded are also polarities for each other and they are polarities that create the harmony of relationships. They can live without fights and they can easily find the way out of any tough situation.