Business is way ahead of you in intentionally building this -- https://www.vice.com/en/article/93bqbp/can-you-be-in-relatio...
Turns out, mimicking emotional connection is something LLMs are also good at.
Also see here for the moral quandaries users are working through (e.g. do I tell my bot about my real life partner): https://www.reddit.com/r/replika/comments/105g425/replika_as...
The really dystopian part is that Replika regularly pushes updates, which change the sensitive topics boundaries, which has the net effect of rewriting the personality, overnight, of a bot people spent substantial amounts of time getting to know.
We live in crazy times.
(DISCLAIMER for addiction-sensitive readers: maybe don't download an intimate AI chatbot? Your time would probably be better invested with human friends)