what does this phrase mean 'Flower of a heart whose trouble, Must have been worse than mine' in the poem Sinner's Rue

In the poem "Sinner's Rue," the phrase "Flower of a heart whose trouble, Must have been worse than mine" suggests that the speaker is empathizing with someone else who has experienced deep pain and suffering. The speaker acknowledges their own struggles but recognizes that the other person's troubles must have been even more severe. This phrase reflects a sense of understanding, compassion, and shared humanity.