Ex fears losing me as a friend. Why?

boyfriend broke up with me after a year saying life's hit him hard, and had he not been in this situation things could've been different. He can't focus on anything else except fixing it and is really troubled. He also repeatedly told me it isn't about someone else or not because of me. But also told me his situation has made him fall out of love. How ever , he asked me "you won't go away from my life completely right? I do not want to lose you as a friend because you are rare, and I do not have too many people who understand me." Yet he won't commit. What's this supposed to mean?
Ex fears losing me as a friend. Why?
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