The speaker opens with a question that sounds almost like a plea: is it normal to feel like several people live inside you? She describes them as different sides of one self, the "drama queen" and "the girl who's mean," and insists they are all her. But thinking about them only tangles things further. She ends up with a "confused you" who is confused about being confused, which captures how dizzying it is to try to sort out your own mind.
The tone shifts near the end. She says it's fine if people think she's insane, a defensive, half-joking shrug that seems to cover real hurt. The last lines are the saddest: most people see her as "nobody" or don't think of her at all. There's a painful contrast here. She feels crowded with selves inside, yet unseen outside. The mood is raw, uncertain, and honest, and the rough spelling and loose punctuation make it feel like a private thought written down quickly.