The speaker wants to be completely honest with someone, but the poem ends by admitting they can't. It opens with a wish: to tell "everything" without the listener being afraid or judging them. That small request shows how much the speaker fears being seen.
What they hold back is quietly alarming. Their hair is falling out, their clothes hang looser, and their parents say they love them "a little less everyday." The phrase "it's getting bad again" suggests this has happened before, though the poem doesn't say what "it" is. Judging by the details of hair loss and weight loss, the speaker may be struggling with their health, and the word "again" hints at a painful cycle.
The mood is hushed and heavy. The lowercase lines and the blunt final "but i can't" make the poem feel like a confession that stops before it's finished, which leaves the reader with a sense of loneliness and a silence the speaker can't break.