Why is he staying friends online?

A crush who I kissed earlier this year now totally ghosted me. but he is still facebook friends he won't delete me or block me. I've texted him several times like, hey whats up. just ghost. So why does he keep me on social media as a friend at all? clearly he's mad at me about something. I have no idea. Why won't he just block me or something if he's clearly done with me?

Why is he staying friends online?
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