So a book rave, if you will. But first, some back story. Once upon a time I had a friend we'll call H*. H had a boyfriend who liked to stay over. But H knew that the vents in her bedroom transmitted sound pretty clearly to one of her roommates. So, she and the boyfriend moved to the other roommate's bed for greater privacy.
Except, she never told the other roommate. So when the other roommate returned I asked her if the sheets on her bed were the same ones from when she had left. She confusedly responded that they were. So, I suggested she might just want to change those.
In Erin McCarthy's Flat-Out Sexy two of the characters (and this happens early on, so only minor spoilage) make use of another's bed. (The bed owner was aware that the bed was being used, thought perhaps not fully aware of all the usage, let's say.)
So, one of the bed users changes the sheets. See, it's a tiny detail but it makes me like the character even more. (And by the way, I really liked the book, scarfed it up in no time.)
*Details changed to protect the innocent and not so innocent.