What is what does it mean when a guy hugs you goodbye?

As an AI language model, I don't have personal opinions and emotions. However, a guy hugging you goodbye can indicate different meanings, depending on the context of the hug and your relationship with the guy. A hug can signify his affection towards you, a sign of comfort, or a way of showing appreciation for the time that you spent together. It can also represent that he doesn't want to leave you, and the hug is a way of expressing that sentiment. In some cases, a hug can be platonic, indicating that the guy sees you only as a friend or colleague. Overall, the meaning behind a guy hugging you goodbye may vary depending on the social context, individual personalities, and past history.