Why would a guy who used to say hi to you and ask how you were doing now ignore you?

Answer

Something or someone has been done or said that he ignores you. If your in school, maybe someone told him something you said about him or someone he knows that he didnt like. Maybe the people he hangs out with him influence the people he talks to, you know like clicks. The only real way to know is to be bold and the next time he passes you, say, Hey, did I do or say something that has offended you and see what his answer is. If he says no, then ask why he is not being friendly anymore, if he says yes, say what is it, I would like to know so we can be friends, life is too short and the world already has enough tension in it.....Or however you would handle it, that is if you think he is even worth worrying over....Good luck.

i would just try to do as he normally had done before, and if he acts weird on that then ask him whats up, did i offend you an such as before.