Thanks to e-readers, it's easier than ever to see precisely where you are in a book. In a recent read, the hero tells the heroine he loves her at 60%. That's a whole lotta book left with one of the characters already committed to the other!
Do you like it when one or both of the characters says those three little words early on in the book rather than right at the end? What is your ideal point in the book for “I love you”s to be exchanged?