"Despite the apparent emotional sophistication of these technologies, fundamental limitations have emerged. At first, users may be drawn into a relationship with an AI companion because they feel validated. But, over time, people consistently perceive human empathy as more emotionally satisfying and supportive. Is the ‘empathy gap’ why we fall out of love with AI?"

https://psyche.co/ideas/why-were-falling-out-of-love-with-our-ai-confidants