In Govinda-līlāmṛta there is a verse which states: "Who is the breeding ground for Kṛṣṇa's affection? The answer is that it is only Śrīmatī Rādhikā. Who is Kṛṣṇa's most lovable object? The answer is that it is only Śrīmatī Rādhikā and no one else." Sheen in the hair, moisture in the eyes and firmness in the breasts are all qualities present in Śrīmatī Rādhikā. Only Śrīmatī Rādhikā is able to fulfill all the desires of Kṛṣṇa. No one else can do so.
Teachings of Lord Caitanya, Chapter 31 (Excerpt)
