Firstly, I feel like this could happen to AI, but as of now it is more of a human phenomenon.
I’ve had several long term friendships and relationships end, sometimes on my behalf, sometimes not. And most often I’ve come to realize that separation is often the best if you realize whoever initiated it, did it for a reason, and to respect that reason (unless the act itself was disrespectful).
Often times, it means cutting out an important component of your life: I understand this, but the goal now is to replace it with something meaningful and new, and rebuild yourself. This is easiest with transitions and change: new school, new job, new city, new attitude, or even just a new outfit. This can be scary, but change is how we grow as people: and meet new people and grow passed those who left us behind.