why is he acting different

Why would he do different?

Ive known my best friend for 3 years and I recently explained to him how I developed feelings for him. At first he seemed to agree with it. but later he seemed to act different and almost no care in me or our friendship. im really fear of losing him and his friendship. I made a mistake in telling him? and What can I do to earn our friendship back?

There is never a mistake saying what you feel and when you feel it. That you be honest with yourself. He on the other hand, I think it was swept and is therefore out of his comfort zone as he always think that your were just friends. Give him space to digest what you have said – it will take time. There is really nothing you can do about the relationship until he decides what he wants from you, except to get into your LIFE.IT know Sucks. Sorry.