Four short lines carry a heavy kind of loneliness. The speaker says they can't talk about what hurts, because the people around them would feel bad hearing it. So they keep it all inside. The phrase "bottle it up" makes their feelings sound like something sealed and under pressure, with nowhere to go.
What makes it sting is the quiet irony: the speaker is trying to protect others from sadness, and the cost is their own isolation. Their kindness leaves them with no one to lean on. The last line drops the explanation and simply states a wish: "i just want a human to love me like i love them." The word "just" suggests how basic and how out of reach this feels. Calling for "a human" is striking too, as if the speaker doubts anyone will really show up.
The mood is raw, tired, and honest. The lowercase, plain, diary-like wording makes it feel like a private thought slipped out, not a polished piece of writing.