The complex interplay between intimacy and fear has informed psychoanalysis since Freud coined the term Oedipus complex in his own self-analysis. Approximately two decades later, in 1909, in “Analysis of a Phobia in a Five-Year-Old Boy,” he expounded on the castration anxiety of “Little Hans,” whose desire for intimacy with his mother led to a displaced fear of retaliation by father-like horses. Meanwhile, also in 1909, scientists discovered a novel neuropeptide—oxytocin—that was later understood to