What is what does you have my heart mean?

The phrase "you have my heart" is an expression of intense love and devotion towards someone. It means that the person being addressed has captured the heart of the speaker and holds a special place in their life. It is often used in romantic contexts, but can also be used to express love and affection towards family members or close friends. Essentially, it signifies that the person being referred to is cherished and deeply loved by the speaker.