[sidebar]It’s not as simple as more single people = more mate shopping = more business-trip mischief = more…well, overtime. “When divorce is common, its social and psychological costs seem lower,” says Aberg, a research fellow in sociology at England’s Oxford University.  While just-divorced women and men may both unwittingly serve as role models, newly single guys seem to be the biggest threat to wedded bliss. “They may have a stronger destabilizing effect,” she notes. Protect your marriage with time-tested divorce-prevention techniques: Listen, talk honestly, and use the words “I’m sorry.” More from Prevention: 12 Ways To Fix Your Marriage