I answered to that saying that I don't want drama in my life and he said many offensive things... He never replied... wtf?
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He got mad because you punctured his ego. Your attention and access into your life via social media was an ego stroke for him. It dignified him and made him feel like you still had him hooked, causing an ego stroke at the click or tap of a button. You snatched it out from under his feet (rightfully so) and now he's upset.
Keep him blocked. He chose to be your past by dumping you in such a cold way and breaking your heart. He can't just pick and choose how much of you he gets to experience. Stop talking to him, ignore all of his messages, and keep him blocked.