I realized "people change" doesnt necessarily mean that they're no longer the ones we used to know. Maybe they just change back into their old selves, the ones we've never known of. And who they were as we've known them for was just simply another mask they put on in order to get something from you, even when it was with caring and good intention. Maybe people change because what they need from you also change.
If i put it in a negative way, it simply means that "you cant give me what i want/ i dont need it from you anymore, so... whatever." with a meaningless sorry.
Some days i really think no one is honestly being nice to you without a purpose, whatever it is, good or bad, when they cant get it from you they ll change their methods.