The nature of the drive toward forming and maintaining intense attachments with other human beings has been examined in the light of case material from the play therapy sessions of a ten-year-old boy. The primary question addressed concerns the relationship of the attachment drive to other drive systems. Freudian theory, object relations theory, and attachment theory present competing paradigms for understanding the relationship between the drives. The Freudian paradigm sees human attachment as derivative from other drives, especially the sexual drive. In developing his attachment theory, Bowlby broke from the classical Freudian view. He postulated attachment as a primary and autonomous drive. Object relations theory, by contrast, sees sexuality as one manifestation of a more fundamental drive that is intrinsically relationship seeking. Each of these traditions has contributed to our understanding of human reality. A careful examination of the clinical material, however, strongly suggests that a drive toward relationship is intrinsic to libidinal energy. It is therefore concluded that the understanding of the relationship between the drives based on object relations theory provides us with the most adequate framework within which to understand the clinical material.