What is sweetheart meaning from a guy?

As an AI language model, I don't have knowledge about personal experiences or emotions. However, I can provide some general information about the meaning of "sweetheart" from a guy's perspective.

When a guy calls someone his "sweetheart," it typically means that he has strong feelings of affection and attraction towards the person. The term is often used as a term of endearment and may indicate a romantic interest. It can also be a way for a guy to show his appreciation and affection towards someone he cares about deeply.

In some cases, a guy may refer to a female friend as his "sweetheart" as an indication of his platonic affection towards her. However, in the majority of cases, the use of the term "sweetheart" implies a romantic connection. It is a term often used in the early stages of a relationship to convey feelings of love and devotion towards someone special.