This poem explores the thin lines that divide different aspects of life and existence such as dawn and day, twilight and dark, sea and shore, shadow and light, air and breath. It compares these subtle divisions to the line between two people in a relationship, suggesting that just as nature's divisions cannot truly separate these things, differences between people in a relationship do not have to divide them either. The poem advocates embracing and celebrating differences as what brings people together and holds their relationship. It hopes that the relationship will continue learning to love without limitations.