Wait. Here's one. And it's totally perfect for a bookshop. In fact I'm nicking it from The Game.

It's a story by Haruki Murakami (how much better can you get for a bookshop?) called 'Meeting the 100% perfect girl one beautiful April morning'. Google it and you should find the whole story. It's very short. Strauss references it towards the end of the book.

I should have (if I'd known about the story) told her I'd just read it, and was inspired by it to talk to her.

Read the story and you'll know exactly what I mean.

Edit: Breaker - or even just say 'sometimes', and then change the subject. That would work for me.