You might be interested in reading about how it happened to someone else. [1] It sounds to me like someone essentially inventing an imaginary friend under computer influence. Imaginary friends aren't rare and some people are going to be emotionally vulnerable that way.

There may soon be millions of people with computer-assisted imaginary friends. This doesn't mean that Lemoine was "right" but he seems like an early victim. It might not be all bad if used responsibly. [2]

[1] How it feels to have your mind hacked by an AI <https://www.lesswrong.com/posts/9kQFure4hdDmRBNdH/>

[2] In Defense of Chatbot Romance <https://www.lesswrong.com/posts/m7EHa5rWTvmbjMTNZ/>