The speaker describes giving up on a love that sits out of reach. They loved someone "so far" away, and instead of holding on to that ache, they hurled their heart away. By chance, or maybe by fate, it landed in someone else: "you."
The poem is only three lines long, and that brevity matters. The word "threw" sounds sudden and a little desperate, as if the speaker wasn't calmly letting go but acting on impulse. Yet the ending softens things. The heart doesn't vanish; it lands, and the "you" becomes its unexpected home.
The mood is wistful but quietly hopeful. There's hurt in the distance of the first love, and there's surprise, maybe even tenderness, in what follows. The title "Fallen angel" may hint at someone or something that has come down from a lofty place, though the poem leaves that open. We can't be sure who the "you" is, and that uncertainty is part of its charm.