there is balance between the individuals along different lines, including balancing time together vs. space apart, the balance of sharing of work, etc.
Every person is first an individual. We MUST keep strong in this in order to have the "2 to give" (see first thought) to the relationship.
We need to support one another in our growth and in our individuality in order to keep the relationship strong.
That requires we balance the need to nurture our individuality of our selves AND the conscious nurturing of the relationship.
That is impacted by work schedules, caring for kids, caring for the home, chores, illness, etc. So we must ensure as a team that everyone gets "their time" to do this.