I feel annoyed?

I told my ex that I ain’t interested in being friend with you because it hurts and it’s difficult for me to move on. And after sometime I send him a message that do not contact me ever. But he didn’t replied to that text. And pointing out on other message he just replied ok.

I feel so annoyed and disturbed right now. I’m unable to move on. And I tried blocking him but I can’t I don’t want to end but it’s hurting ughhh. I don’t know how to explainnnnnn!!!
I feel annoyed?
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