When your friend suddenly bad mouthed about your personality, and your doing, what is your responds towards them. My responds is giving him advice to not make any bad speculation. But, in reality, how many people would really2 hear your advice? Only you know that. Im in the same situation. I don't know whether he was affected by others, but one thing for sure, you should not say something that can/maybe cut our friendship. Some people are sensitive towards friendship, some are not. Perhaps today I can forgive that, but I cant be sure if you had make others angry towards you.
Honestly speaking, Im in a bad mood today due to my assignment that had not been pass up by my friends, and here you are try to make me angry again. And its not just that, You had make other people frustrated with your attitude my frenz. Just an advice for you. Beware the fury of a patient man. Never make a negative decision in the low time. Never make your most important decisions when you are in your worst moods. Wait. Be patient. The angry will pass. And the calm will come.
P/S : We have to have a deep, patient compassion for the fears of men and irrational mania of those who hate or condemn us.