Alone time doesn’t guarantee a great marriage. But, according to a 2012 study from the National Marriage Project at the University of Virginia, couples who spend more one-on-one time together are less prone to divorce and report higher levels of sexual satisfaction, communication and commitment. “Husbands and wives who engaged in couple time with their mates at least once a week were approximately 3.5 times more likely to report being ‘very happy’ in their marriages,” the study added.