Why he keeps me blocked?

I was in a relationship with him. We had a small argument, I told him I don't care anymore and I have nothing to say to him anymore, not actually meaning it. Then he just blocked, directly, without saying a word. This actually shocked me very much, I couldn't believe it. Until now, I have been blocked. For three weeks. He doesn't want to talk to me. My friend sended him a message and he blocked her also.

Before we also had difficult times with him. We broke up two times, always because of me. Can this be a reason? But why he didn't say anything, not even a goodbye, before blocking me?

I loved him so very much and I miss him all the time. I can't contact him anymore and it makes all of this even worse.

Why he keeps me blocked?
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