H.C. Andersen 
Talisman [EPUB ebook] 

A prince and a princess were just married. They were in love, their relationship was stronger than anything. And they wanted to keep it like that forever. But how? They thought that a talisman could help. So they went out searching for such talisman that would make their love, joy and happiness stand the test of time. Do you think they succeeded? Let us tell you that they did indeed find out something about themselves. But what was it? Read "The Talisman" if you want to find out. –