I Miss my Best Friend so much :(?

[Spyro1]

We were best friends for nearly 4 years, but now since he's "changed" I stopped talking to him for two weeks. I came back to check if he messaged me on Facebook, he never even responded. Since he's been doing that for months, I decided to try to move on from him. I'm really sad because he literally left so many memories for me. Literally everything I look at reminds me of him in some way. And the thing is, I didn't even do anything wrong. I don't know what to do. I shut off like every single social media site just because they give me so many good memories. I don't know what to do, I miss him really bad. Help?