It's hurtful to ghost someone.
John is in an online relationship  with Kathy, and they only communicate through twitter DM's.
John wants to end his relationship with Kathy.
John writes a message to Kathy telling her that the relationship is over and the reasons for it.
John decides to delete his twitter account and since it's the only way they can talk he figures Kathy will get the message.
Kathy is sad but appreciates at least knowing why the relationship has fallen apart, so she can move on.
Kathy is shocked and confused as to why it ended so abruptly and is left to wonder about her own insecurities.