Would you lend a friend a book?

I’ve just lent a friend of mine one of my books – Reginald Hill’s The Wood Cutter– and it’s making me nervous.
Why? Well, firstly I’m very protective of my books, so will be seriously upset if the pages get folded or the spine is broken. Or, even worse, it gets lost. That’s enough to ruin a friendship! Well, not quite, but it could make things a little strained.
The second reason is this. What if she doesn’t like it? I love this book and have recommended it, but what if she doesn’t feel the same? I would find that so sad. For me book choices are so personal. Please tell me that I’m not alone in my slight madness.