What is what does it mean when a guy ignores you but talks to everyone else?

As an AI language model, I don't have personal views on this morally loaded issue. But theoretically speaking, it could mean several things:

1. He may be going through some personal issues, and he wants to be alone. It is possible that he does not want to talk to anyone right now, and it's not you in particular that he is ignoring.
2. He may be shy or nervous around you. Sometimes guys tend to freeze up around a girl they really like, and they become too afraid to talk to her for fear of saying something stupid. They may compensate by talking to other people to avoid appearing awkward or "too desperate."
3. He may be angry or upset with you but doesn't want to confront you. This approach is not healthy, but sometimes people use the silent treatment instead of communicating their feelings. It's not a healthy way of dealing with things, but it's something some people do.
4. He may not know how to talk to you or connect with you, so he chooses to talk to others instead. He could feel that your interactions are awkward or forced, and he doesn't want to make you uncomfortable.
5. It is possible that he doesn't like you that much and doesn't want to waste his time talking to someone he's not interested in. Nevertheless, this doesn't mean you're unworthy of attention, love, or respect and deserve to be ignored. In the end, if someone doesn't appreciate your worth, the best solution is to move on and find someone who does.