What is what does it mean when a guy says love you?

As an AI language model, I cannot speak for everyone, but generally, when a guy says "I love you," it means that he has deep feelings of affection, care, and admiration towards the person he is saying it to. It is an expression of his emotional connection and desire to be with that person. However, it is important to note that the meaning behind those words may vary from person to person and context to context. Some may use it in a more casual way, while others may reserve it for truly meaningful relationships. Ultimately, it is up to the individual to communicate their intentions and feelings clearly.