When a person expresses love, interest, or affection for someone or something and the person they are speaking to only says "Ditto", like Patrick Swayze in the movie Ghost.
Rontold his girlfriend he loved her, only to be ghosted by her response of "Ditto".
When someone you talk to often suddenly stops speaking to you and ignores all your messages. They become a "ghost" since it's like they are no longer there.
I thought things were going great with him and I but he ghosted me...
He won't reply to my messages or Dms.