Can AIs cure lonely hearts? Xiaoice is an artificially intelligent and emotionally empathetic chatbot, launched by Microsoft in China in 2014. She is always available to respond, shows compassion for people's problems, though sometimes have a unpredictable personality. People who interact with her are significantly more engaged in the conversation compared to the average chatbot. Millions have poured their hearts out to her and declared their love for her. How will this change human-machine relationship?