What is i thought this guy likes me but now he ignores me?

It is possible that the guy was initially interested in you but changed his mind for various reasons. It could be that he is unsure about his feelings for you, is dealing with personal issues, or simply lost interest. It is also possible that he is playing games or is not emotionally mature enough to handle a relationship. Whatever the reason may be, it is important to communicate with him and voice your concerns. If he continues to ignore you, it may be best to move on and focus on someone who is willing to reciprocate your feelings and give you the attention you deserve.