Si è spento il sole

The song describes someone suffering after a beloved has left for another person. At first, the speaker’s grief makes the world seem cold and dark, as if the happiness of summer has disappeared. Even though the relationship is over, the speaker still loves the person and ends by insisting that they cannot love anyone else.

The “sun” going out represents the loss of joy and warmth in the speaker’s heart. Summer, the warm sea, and the moon recall the couple’s happier beginnings, so their contrast with cold wind and darkness makes the present loneliness feel sharper. Saying that another person “stole” the beloved from the speaker is an emotional way of describing the rival’s role, not necessarily a literal theft.

The speaker blames the former lover for this loss, but also says they will never seek another partner. That vow may express deep heartbreak in the moment rather than a settled decision about the future. The repeated contrast between love that has ended and love that remains suggests the central tension: the relationship is gone, but the speaker’s feelings have not faded.