He wanted her at his New York City apartment. Immediately.

"I told him it was too late—the trains just stopped running," Amanda said. "He said he'd send a limo."

Amanda agreed, on the condition that she'd be back on campus for her 10 o'clock class the next morning. After dinner at a fancy restaurant, sex, and some post-sex apartment decorating, Amanda was back in the limo. When she got back to Princeton, she had just enough time to change her clothes, grab her books, and run to class.

Stephen is just one of the many men Amanda has met on Seeking Arrangement, a website that connects "sugar babies"—young, pretty women—with "sugar daddies"—usually rich, older men.