Dear Liu Jie,
I think it is too early to say whether or not your friend is over. As George Washing once said: " ...True friendship is a plant of slow growth, and must undergo and withstand the shocks of adveristy before it is entitled to the appellation." When you have a quarrel with our closest friend, two of you may feel hurt emotionally. Sometimes it is easy for us to hurt someone we cherish best because we feel that we are no longer two people. Pure friendship has joined us as a whole. Friendship is a place where we can understand ourselves with someone else.
I am sure that your friend will feel that as the time goes by, for time is called the best remedy to heal the wound. True friendship is durable , which is not easy to be destroyed. Please show your sincerity to him and write a note to remind him of the past you two have experience. Recollect the moving stories which happened between you and your friend. If you really treasure the friendship between you two, he is sure to come back to you by shaking off all the unpleasant past. By doing that, you may figure out whether he deserves you or not. Remeber: A true friendship never fades away for easily.