Help please. I don't know what to do?

Today this guy ended things with me because he thought I was cheating on him so he stopped talking to me and I would always have to text him first. Last night, I told him to message me when he woke up so I could talk to him before he went to work. But instead of texting me, he got on Facebook and was doing stuff on there. So I've texted him and asked if something was up because he was acting weird. He told me he didn't want to talk anymore and he ended things. He even blocked me on everything before I even got a chance to explain. What should I do to get over it?
Help please. I don't know what to do?
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