The Fellowship of the Ring
Goldberry is Tom Bombadil's companion; she keeps his house and hosts the Hobbits when Tom isn't around. She also appears to be a spirit of the water, as Tom Bombadil somehow arises from Middle-earth itself. When Frodo and the Hobbits stay with Tom and Goldberry, they observe that the two of them together "weave a single dance, neither hindering the other, in and out of the room, and round about the table" (1.7.51). The two of them are perfect complements to each other. They represent the kind of partnership that comes from a couple in which neither seeks control or possession of the other.