I note none of the guys have been around too much to help on this, however, sometimes getting what you want is scary! This especially applies if the thing you wanted is emotionally overwhelming. IMHO you can't hold on to a friendship if the other person wants to leave. My advice? Take a deep breath, let go and accept whatever is coming or happening. Focus on your own things and life. IME if the friendship is true, then when he has recovered he'll be sheepish & you will forgive him for being silly & you can just get on. If not, then you've lost nothing, as a friend who can't handle a situation like that is unlikely to be able to be supportive in other stressful circumstances.
Remember by trying to force the issue you are, in my view, likely to push him further away.
All the best,