Two images carry "Away": the speaker is sand, and the person they love is the ocean. The sea pulls the sand back into itself, and the speaker seems unable, and maybe unwilling, to resist. The storm suggests trouble or upheaval, yet the pull is the same whether things are calm or rough.
The lines about the full moon hint that the loved one grows more unstable at certain times, more "crazy," as the speaker puts it. The speaker admits they can't stop this. Even when the ocean leaves and returns, the sand goes along with it in the end. That repetition makes the relationship feel like a cycle, like tides.
The mood is tender but resigned. There's no anger here, just a quiet acknowledgment of being helpless against something larger. The short lines and the final word, "Away," sit alone like a wave pulling out, leaving a sense of surrender that is both loving and a little sad.