The speaker stands in front of someone and asks them to look closely at their face. The questions come fast: do I look happy, do I feel better? But they aren't really questions. The speaker already knows the answer is no, and is waiting to see whether the listener can see it too.
What hurts most is the second stanza. The speaker admits to "faking all of my emotions" in front of this person, and wants to know if anyone will notice the act. The command "Read" appears three times, and the last one stands alone, blunt and almost pleading. It feels like someone tired of explaining themselves, hoping to be understood without having to say it out loud.
The mood is quiet, tense and lonely. The short lines and plain, slightly broken English make it sound raw and honest, as if the words came straight from the speaker's head. The title, "Happy," ends up feeling deeply ironic.