The puer as Don Juan is certainly erotic, in the sense that he is always in pursuit of relationship, and women love him. Yet he is also incapable of relationship, because if ever he fully commits himself to the experience of the body, then he is trapped in the world of form, and the quest for immortality is lost.
Greene argues that Don Juan is the puer aeternus in erotic disguise: his serial seductions are driven not by desire for the body but by an unconscious quest for transcendence that physical consummation would foreclose.
, The Development of Personality: Seminars in Psychological Astrology, Volume 1, 1987thesis