The speaker is in love with a girl who thinks of him only as a friend, and the poem is his painful admission of that. He describes how she makes his life better and how everything stops when she's near, yet he stays invisible to her. The line "She likes him, I like her. Who likes me?" sums up the problem neatly: a chain of feelings that never loops back to him.
What stands out is how the hurt builds. He says he "fell" somewhere between their jokes and laughter, and the single word "Hard." on its own line makes the fall feel heavy. The broken phrasing and trailing dots give the poem a hesitant, halting voice, as if he's struggling to say it out loud. The mood is raw, lonely, and a little defeated. The ending, "No one... At least.. / Not anymore," is ambiguous, but it suggests he feels left with nobody, and that something in him has given up hoping.