Ok so from what I can remember, this girl has a device that has a helpful AI that becomes sentient and sorta physical and they develop feelings for each other. There’s a bit of a love triangle going on with one of the girl’s friends too.
I remember the last chapter, or one of the chapters having the device get wet which kinda resets the AI…?

I know the series wasn’t too long, but I read it like ten years ago and I’ve forgotten the title.