“Ooh, you deleted me off Facebook. Is that your final revenge? What’s next, you throw a Fruit Loop at the back of my head and expect it to hurt?”
If it didn’t bother you at all and you see it as pathetic, why do you have to announce it to everyone? This statement seems just as cowardly because, as the current privacy features are set, said deleter won’t even be able to see this post.
Clearly, you posted this for you and it only demonstrates that, whoever this person is, they got to you.