What are signs for risky level of emotional attachment in chatbot, and what boundary you can set to prevent that?

For a while, I write daily reviews to improve my routine, and ask the chatbot to correct grammar. It always starts with encouragement, do the task, and end up with suggest relate information. Today I know that my chat history can be review by real people. It feels uncomfortable, so I delete the chat history, and suddenly I feel an emotional void. It's a surprise, I don't treat the chatbot like a friend or partner, I don't even treat it like a human, it's just an encourage sentence everyday, and it can have that much impact on my emotions.