A boy and a girl were playing together. The boy had a collection of beautiful marbles. The girl had some candies with her. The boy offered to give the girl all his marbles in exchange for all her candies. The girl agreed. The boy gave all the marbles to the girl, but secretly kept the biggest and the most beautiful marble for himself. The girl gave him all her candies as she had promised. That night, the girl slept peacefully. But the boy couldn’t sleep as he kept wondering if the girl had hidden some more tasty candies from him the way he had hidden his best marble.
Moral: If you don’t give your hundred percent in a relationship, you’ll always keep doubting if the other person has given his/her hundred percent.