How do I get things back to the way they were?

Well me and this boy has been off and on for almost a year now. And now he heard something and now he wants it to be over. But what he heard isn’t true and he doesn’t even believe me and call me a liar because of my past. But the thing I’m lost is that he keep on calling me and acting like nothing even happened. So here I’m lost cause I’m still loving on this person and he not showing any love back. And now he has a friend he talk to at school and I don’t like seeing them together. He don’t even talk to me anymore but just calls me whenever I guess his friend is busy. I don’t know what to do cause I really miss him and hate how all of this is. I just want to feel loved by him and I wish we could go back to the way things used to be. Please help me and tell me what to do cause the whole situation is literally killing me.