My boyfriend ignores me, what am I gonna do?

We've been dating for 3 years, I thought that was gonna last forever, but... few weeks ago we had a stupid hassle ( I didn't answer him, because was angry), so he wrote me "bye" and blocked everywhere: my phone number, social networks. I had my birthday in may, he didn't even congratulate me. I tried to talk to him, but he didn't answer me and our friends. I don't know what to do now. We had fights like this but it never was that long. Does it mean that he broke up with me or should i wait longer? How can he be so cruel after all this years and can't just say that he doesn't want to be with me anymore, so I wouldn't wait in vain? I feel myself so bad because of his attitude, can't believe it all happens with me. Help me please.
Terribly sorry if there are any mistakes, I'm not a native speaker

My boyfriend ignores me, what am I gonna do?
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