When we first started dating I let my wife borrow my copy of my favorite book, which she returned annotated with a running commentary in little scraps of paper. It will always be my favorite book. I now have a second copy of the book for loaning out. The copy she borrowed lives on a special shelf under a glass dome display. I only handle it while wearing powder-free nitrile gloves. I have day dreams about our children fighting over who will inherit when we die.