The answer is simple, really. It's because it represents their marriage. And it was carved into an olive tree, if I'm not mistaken. So if you wanted to move something carved into a tree, you would have to move the tree so... hope this helps in any way shape or form. :)
He creates realistic dialogues for his characters by imitating the real life, so his characters use simple words and speak in short, clear sentences.
Whats the question????????
The main character is known as an antagonist