Core 'ngrato

The speaker addresses Catari, who has said painful things and seems no longer to care about his suffering. He feels that he gave her his heart, but she has moved on. The emotion grows from hurt and disbelief into intense grief: he even says he has prayed and spoken to a priest because he cannot bear what he feels.

The “ungrateful heart” is a way of blaming Catari for taking his love and leaving him emotionally wounded. Saying she has taken his life is likely an exaggeration expressing heartbreak, not a literal claim. His visit to a church and confession shows how desperate he is for help, while the priest’s advice to leave her alone suggests that the speaker may need to accept the loss.

The song presents the speaker’s pain very strongly, but it gives us only his side of the relationship. Catari’s reasons for speaking harshly or moving on are not explained, so we cannot know whether she has been cruel or whether the speaker is interpreting the separation through his grief. The repeated complaint may express sincere heartbreak, but it also shows how difficult it is for him to stop dwelling on the past.