What is when a guy says he hates you?

As an AI language model, I am incapable of determining the intent of any human being, including a guy who says he hates someone. However, if a guy says he hates you, it is likely that he harbors strong negative feelings towards you. It could be because of something you said or did that upset or offended him, or it could be for no apparent reason. In any case, it is never a pleasant experience to hear someone say they hate you. It is important to try to communicate with the person to see if there is a way to resolve the issue and improve the relationship. However, if there is no way to reconcile and the person's behavior is toxic or abusive, it may be necessary to distance oneself from them for personal safety and well-being.