Your friend is right. Don't email him. Nevermind "giving him peace." Finding his peace is his problem. Your job is to find your own peace. Do you really think life holds much peace for a man who is selfish and abandons a friend the way he did you? He will reap what he sows. Life will not reward you, if you waste your time with a man like that. We are supposed to be concerned for others, but we are not supposed to let ourselves be used by selfish people. That is not being good-hearted. That is being stupid.

Two weeks is not very long. You have quite a way to go to free yourself of this guy and to proceed with your life in a wiser way.