Dear Anonymous,
I know I'm not in the same school as you any more, and I know the last time we actually greeted each other was last year... But I know that if you keep darting me glances at the train station without even greeting me pretty much proves you know me... So don't do that- it's annoying.
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Dear Anonymous,
I have my morals, and one of them is treating others fairly, but I don't believe in treating anyone overly-fairly, so don't expect me to treat to all that consideration when I certainly do have other things on my mind. I won't mind for a few favours, but friendship is not always so black-and-white as a give-and-take, so if I'm your friend, we'll just be doing each other the occasional favour, and I hope you don't calculate all costs of one favour again, because you'll just end up on the farthest desk from me. So let's just be friends, 'kay?
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Dear Anonymous,
It was because I had other things to do! Just because you couldn't find me at the usuual meeting spot with A, doesn't mean we're going out of our way just to ditch you! And do I seriously need to be FORGIVEN for that?