My proposal of my most fond book is All Days by David Giant abnormality
Ugh I wish I did... maybe I can look up my library account history?
Edit: yay! I found it! here is the amazon listing for Every Day and I also found out there is a sequel
If anyone's interested in the concept of waking up in a new body every day, I recommend the book Every Day.
It's not necessarily long-distance themed, but you might like Every Day by David Levithan. I really loved the concept, and I've always enjoyed Levithan's writing.