We move back and forth with each other. Ever notice that on a dance floor you can tell which people are dancing with each other no matter how far apart they are. Some people who dance to seduce turn cold as they leave the floor. Whatever your style of dance, it is all an attempt to relate to another human. It is an attempt to get in rhythm with each other and to move as one unit, as a couple.
Some people choose to dance alone.
They have lost contact with their partner. If they are dancing solo, they may find their own peace with whatever imaginary partner they have. To be a couple we must find the rhythm and stay in balance with our partner. This dance of balance is important in relationships. We usually pick a partner who will balance us.