I'm really confused and lost..?

I'm soooo lost right now. I feel very alone and I just don't know how to deal with it. I love an old friend I used to have and we don't talk and it's kinda killing me. I'm crying as I type haha. But in all seriousness I love this kid. We dated a couple years ago but we broke up and became best friends. He was my all and my favorite person in the world. We used to talk on the phone for hours a day everyday and we were there for each other no matter what then all of the sudden (just a few months ago) we stopped being friends. I really miss him and it saddens me that he isn't around anymore. I realized today that I really have loved him ever since we got close and then I had a wonderful dream about him this morning and it made me miss him more. I hope he doesn't hate me for anything. He claims that I was talking bad about him to someone that I don't even talk to so that's why he stopped being my friend. That's so stupid because I cared about him way to much to say anything bad to anyone about him. I want to call him sooo bad but I am terrified of rejection. How can I get threw or over this? I feel really lonely because he isn't around and I feel like I am missing out on everything since we used to be each others everything. I never felt like this about anyone ever.