What do you do when you realise that the people you care about, don't care for you as much?

*note, I don't mean that they don't care for you at all. But I mean not the same level. Like a friend that you have in collage, who suddenly only considers you as a school friend. Talks less about his private life anymore and initiates less with you.

Do you talk to them about it? Do you just let it go and ignore them?

What do you do when you realise that the people you care about, don't care for you as much?
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