Everybody's doing it. Therefore.
Dear friend,
I am writing to you because she said you'd listen and understand and didn't try to sleep with that person at that party even though you could have. Please don't try to figure out who she is because then you might figure out who I am, and I really don't want you to do that. I will call people by different or generic names because I don't want you to find me. I didn't enclose a return address for the same reason. I mean nothing bad by this. Honest.
--The Perks of Being A Wallflower (some Muggle book)