" Once a heart breaks…it doesn’t just grow back. It’s not a lizard’s tail. It’s more like a huge stained glass that shattered into a million pieces, and it’s not going back together. Least not the way it was. You can mush it all into one piece, but that doesn’t make it a window. That makes it a pile of broken colored glass. Shattered hearts don’t mend and they don’t heal. They just don’t work that way. Maybe I'm telling you something you already know. Maybe not. I just know that when half dies, the whole thing still hurts. So you get twice the pain and half of everything else. You can spend the rest of your life trying to put that stained glass back together, but it won't go. There's nothing to hold the pieces together. "

― Charles Martin , The Mountain Between Us