Why he prolong the conversation because deleting me?

Is it strange for a guy who didn't want to be with you to begin with break it off with you for something small so you tell him that he can leave you if that how he feels and that you won't beg or pled him to stay.. so on Instagram he keeps telling you he's done but kept replying to the conversation and then views your story you just put up and then says nevermind no answer is a answer to just being friends and so he removes you from following him but he doesn't unfollow you 🤔? But then hours later he unfollow you hours later.. why didn't he just block me?
Why he prolong the conversation because deleting me?
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