He feels disappointed

in Freewriterslast month

Why didn't he tell us he was disappointed?
I might tell you

No, he didn't tell us.
Rather, he told you when he started hiding in his room a lot, and when he said that he was not hungry,

He told you when he stopped studying and did not care about it,

When he stopped combing his hair,

I tell you when he put on his dark clothes over and over again, I tell you with his pale face and red eyes,

He told you when he smiled and said, "Fine," and his eyes looked away,

He told you that he spent most of his time writing his diaries, scattered letters, and mysterious drawings.

I told you when he used to pretend to be sleepy and go to bed early to be alone...!

He was telling you all the time, but you didn't understand him. You didn't understand that his frustration was quiet and didn't make any noise. You just didn't understand what was wrong with him, so you didn't care about him at all.