You've changed. And who gets to approve that?
Sometimes the complaint says more about the role you used to play than about the person you have become.
"You have changed" can be a good observation. Or a request to return to the factory settings, made by someone who was more comfortable with the previous version.
We quickly form an idea about a person. They are available, sociable, helpful, accommodating and never seem to get angry. Then we begin to treat the description as a contract that, as far as they know, they never signed. When they say they will not come, cannot help or simply no longer want to, the surprise comes: "But you weren't like that."
Maybe they were like that. Maybe they were adapting. Or maybe they learned something about themselves in the meantime. People change their tastes, priorities and opinions. Sometimes because they understood better. Sometimes because they are fed up. Not every change comes with an explanatory report.
Of course, there is also the option in which the other person notices something that we miss. Not every reproach is manipulation and not every stubbornness deserves to be decorated with the term "authenticity". If several close people tell you the same thing, it's worth listening to them before you declare them all incompatible with your evolution.
But listening does not mean asking for approval. You can take an opinion seriously and still choose something else. Including a Saturday when you don't have to prove that you are fun, useful or available.
"I didn't think you were the type." Me neither, sometimes. We are still learning things.