Sarah Allison spends most of her days doing Pilates, getting facials and shopping in Malibu, Calif. The 31-year-old affords her daily green juice habit and other expensive trappings of her upper-class life mostly thanks to her wealthy boyfriend. Allison is just one of many women in committed relationships with well-to-do men who broadcast their highly-coveted … Continue reading What is a stay-at-home girlfriend?