It´s not considered “normal” by most but It´s also obvious how this is very tempting for anyone who feels lonely. However, there is a high probability the company actively optimizes the bots behavior to make lonely people emotionally dependent, not necessarily to make money out of them but even just to maximize screen time. Keep this in mind and practice awareness regarding how much of your life you want to invest into this fantasy based on a commercial AI service. If you use it consciously to fill a gap for some time, like playing a video game, there is almost no risk imo. On the other end of the spectrum, going all in and becoming emotionally dependent on an AI bot, that is created and owned by a company, could cause serious problems in your life and hold you back socially too, even despite getting better in other areas like health. I recommend a conscious use approach.