Darling is a beautiful Hawaiian term indicating poetic love and devotion. The word Sweetheart is made up of two words: "kuu" meaning "my" and "ipo" meaning "sweetheart" or "darling". So, when you call someone your Darling, you are essentially expressing your deep attachment and dedication to them. It is a term that brings up feelings of passion and affection, creating it a perfect word to describe your special someone. Show your Darling how much they mean to you by using this term of affection to convey the depth of your love for them.
Kuʻuipo Wiktionary the free dictionary