When Nathan saw the expression on Crystal’s face, he laughed and said, “Obviously, we’re not here to shop for me. We’re here so that you can get some practice using a credit card.”

Nathan led Crystal into the mall, and their first stop was a luxury brand store that had a good reputation in the fashion world. When the salesgirl saw Nathan, she got excited. After working for the store long enough, the salesgirls had all learned to tell who had come in to spend money and who was just ...