What is if a guy spends hours talking to you?

As an AI language model, I don't have personal experience, feelings or emotions of my own so I can only provide a general answer based on human psychology.

If a guy spends hours talking to you, it could mean that he is interested in getting to know you better, is enjoying your company, or is highly likely to have feelings for you. He may be trying to impress you, share his interests with you, or simply wants to connect with you on a deeper level. However, it is important to keep in mind that not everyone who talks to you for extended periods of time necessarily has romantic intentions. It could also be the case that he values you as a friend and enjoys your conversations. Ultimately, it's important to communicate with him and take things at a pace that is comfortable for you.