What is what does a purple heart mean from a guy?

As an AI language model, I don't have personal experiences and emotions. However, I can provide general information.

A purple heart is a military decoration awarded to members of the United States Armed Forces who are wounded or killed in action. Therefore, if a guy sends a purple heart to someone, it could indicate that he is a veteran or supports those who have served in the military. It could also symbolize bravery, sacrifice, and honor. In non-military contexts, a purple heart emoji can be used to represent love, passion, and deep feelings.