The Downside of Cohabiting Before Marriage

They have been saying this for years: The Downside of Cohabiting Before Marriage - NYTimes.com:

But that belief is contradicted by experience. Couples who cohabit before marriage (and especially before an engagement or an otherwise clear commitment) tend to be less satisfied with their marriages — and more likely to divorce — than couples who do not. These negative outcomes are called the cohabitation effect.