Having a hard time coping

So not too long ago, some two faced jerk suddenly decided that he never wanted to be my friend and that he was "forced" to be my friend, when the facts and the evidence say differently. I've had a hard time coping with it, but I know for a fact that this guy wanted to be my friend and he promised me he would never do anything against my will or abandon me, and he broke those promises and did everything else he said he wouldn't do, and when I went to tell these other people that he said "cared about me" during one of my first conversations with him in an attempt to "cheer me up" as he claims, those people pretty much either told me to go fuck myself and/or completely ignored me and sided with him. And he also formally announced to his forum that he was abandoning me and that he wanted nobody else there to associate with me and that anyone who asked about him or defended him would be kicked out. It's like he has become a completely different person than he was when I first met him. He was even thanking the person who introduced me to him for introducing him to me, saying what a nice guy I am and told me how he was happy he met me and shit. And now all of a sudden he is saying he never wanted to be my friend and that he was "forced" to be my friend. Either he is a two faced hypocrite, or he is suffering from short term memory loss. And like I said, this hasn't been easy to cope with and I haven't told anyone who this guy is except for a few people. And hearing him say that he never wanted to be my friend just really made me furious. And I am positive this is due in part from the influence of some other person he met not too long after he met me who manipulated him. And those who told me off and/or ignore me that he claimed cared about me during one of my first conversations are defending and white knighting him and he is trying to make himself look like a victim. I don't know what to do! This has been bugging me for more than a week now! I've barely been able to distract myself from it at all!