The speaker has been rejected by a woman, and he has no idea why. Instead of blaming her, he turns the questions on himself. Is it his face, his voice, his jokes, his body? Even his good qualities come under suspicion: maybe he's too nice and seems fake, or too honest and says too much. The questions come fast, one after another, which makes the poem feel like a mind that can't stop circling.
Midway through, the questions shift from what is wrong with him to what he might be doing to her: making her feel ashamed, inadequate, stressed, in pain. Then the poem turns to statements. His love and heart are rejected, and the closing lines list the feelings he's left with: stress, pain, inadequacy, shame. The rhyme and repetition give it a chant-like, almost obsessive rhythm. The mood is raw and anxious, full of confusion and self-doubt. The final line suggests he's ashamed of what he still doesn't understand.