The speaker begins with a small confession: they can't dance. It sounds like a joke at their own expense, but it sets up the poem's real point. What the speaker can't do with their body, their words can do on their own. When the loved one is gone, the words move, and they move "thinking only of you." The writing itself becomes a kind of longing, lively and graceful in a way the speaker feels they are not.
Then the poem turns on a single word: "stay." After the playful, tender image, this plea lands hard. It is short, quiet, and direct, and it shows that the dancing words are really a sign of absence and need. The mood is gentle and wistful, with a trace of vulnerability. The speaker doesn't argue or explain, and simply asks. The dash before "stay" makes it feel hesitant, as if it slipped out after the speaker had been holding it back.