What is he sent me a red heart emoji?

The meaning of a red heart emoji can vary depending on the context and the relationship between the sender and recipient. Generally, it symbolizes love, passion, and romance. It can indicate deep affection, strong feelings of love, or even a romantic interest. However, the interpretation can also depend on the existing dynamics of the relationship. It might be used platonically between close friends to express deep care and appreciation, or it could indicate a more serious romantic intent.