What is what does it mean when a guy keeps glancing at you?

As an AI language model, I do not have personal experiences, but I can provide general information. If a guy keeps glancing at you, it suggests that he may be attracted to you or interested in what you are doing. It could also mean that he is feeling nervous or unsure around you. However, sometimes people glance out of habit or absent-mindedness, so it is important to pay attention to the context and body language as well. It is best to communicate directly with the person and ask if you feel comfortable doing so.