If a guy ghosts why does he not just delete me?

So my crush is now ghosting me and we were talking for a while and getting along great. then all of a sudden he ghosted me completely. I don't know what happened. He even avoids me online all the time? like why not just unfriend me? I don't get it? why keep me around if you are hiding from me?

If a guy ghosts why does he not just delete me?
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