Staci and Mark aren't alone. According to the National Sleep Foundation, one in four American couples sleep in separate beds. By 2015, the National Homebuilders Association predicts 60 percent of custom-built homes will have two master suites.
Dr. Phil says the arrangement seems to be working for Staci and Mark, but he encourages them to spend time together before and after sleeping. "My concern is what you're missing," he says. "Because when you go to bed at night and you're able to comfort each other and you're cuddling and you're together, then I think that's a really important part of your relationship."
Mark says he and Staci work at having that kind of intimacy. "I will go into her room, or she'll come in my room," he says. "She'll come down into my room in the morning."