It began with one credit card. At the time, it was the only one she had. Nick would max it out with $5,000 worth of business purchases and promptly pay it off the next day. Miriam, who asked me not to use their real names for fear of interfering with their ongoing divorce proceedings, discovered that this was boosting her credit score. Having grown up with a single dad in a low-income household, she trusted Nick’s know-how over her own. He readily encouraged the dynamic, telling her she didn’t understand finance. She opened up more credit cards for him under her name.