I bought a paperback set of A Song of Ice and Fire to loan out to friends who ask to borrow it. My first edition hardcovers are my babies. I could not just hand them over to just anyone. One of them was pre-ordered for over a year.
So while one friend has my copy of A Game of Thrones another asked to borrow it. I explained it is loaned out. The other day I ran into the one who has it and learned has not gotten past page 25 while working long hours and reading Jane Eyre. Explained to the other friend the situation and regretted it. So I brought her my hardcover to borrow.
The first thing she did was look inside and realize it is a first edition. It shocked her. She promised to take care of it.