I'm reading Till We Have Faces right now by CS Lewis, and it has really reminded me why I enjoyed CS Lewis so much in the first place. The story is a take on the myth of Cupid and Psyche, and I can't really describe it yet, except that it is very, very good.
It tells a lot about how we feel love for each other and what it is like to lose it. Great if you've ever been on the bad side of a breakup, great if you've ever lost someone.
Please check it out, Lewis was a very intelligent writer, and this book shows it while remaining very accessible and easy to read.