Robert A Wilson, a professor of pure mathematics in the School of Mathematical Sciences at Queen Mary, wrote some poems and short stories for mathematicians, one of those great stories is related to Alice and Bob.

Alice and Bob were deeply in love. They were first-year students at university and they fell i love in the front row of the algebra lectures. It wasn’t love at first sight—it began as a competition to see who could answer the professor’s questions quickest. You see, the professor had a habit of asking the students how they thought the algebra would go, before telling then how she thought it should go. Most of the students thought these were rhetorical questions, but not Alice and Bob. More often than not, one or other of them answered the question. And more often than not, they were right. After a while, they found that they were no longer trying to impress the professor: they were trying to impress each other….

Download full PDF on: http://www.maths.qmul.ac.uk/~raw/pubs_files/AliceandBob.pdf