Even now, before AI has mastered fluent speech, millions of people are already forming intimate relationships with machines, according to Jason Fagone, a journalist who is writing a book about the emergence of AI companions. Character.ai, the most popular platform for AI companions, has tens of millions of monthly users, who spend an average of 93 minutes a day chatting with their AI friend. “No one is getting duped into thinking they’re actually talking to humans,” Fagone told me. “People are freely choosing to enter relationships with artificial partners, and they’re getting deeply attached anyway, because of the emotional capabilities of these systems.” One subject in his book is a young man who, after his fiancée’s death, engineers an AI chatbot to resemble his deceased partner. Another is a bisexual mother who supplements her marriage to a man with an AI that identifies as a woman.