一项最新研究发现，结婚前就开始同居的伴侣离婚率要高于婚后才开始同住的伴侣。目前美国大约有70％以上的伴侣处于婚前同居状态，而研究结果表明这并不是一个明智之举。研究人员表示，很多伴侣在同居之初并没有明确的婚姻承诺，而后来走进婚姻大部分是因为已经在同居或者为了避免处理共有财产的麻烦，而这些都是结婚的错误前提。

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Couples who shack up before tying the knot are more likely to get divorced than their counterparts who don't move in together until marriage, a new study suggests.

Couples who shack up before tying the knot are more likely to get divorced than their counterparts who don't move in together until marriage, a new study suggests.

Upwards² of 70 percent of U.S. couples are cohabiting these days before marrying, the researchers estimate. The study, published in the February issue of the Journal of Family Psychology³, indicates that such move-ins might not be wise.

And it's not because you start to get on one another's nerves. Rather, the researchers figure the shared abode⁴ could lead to marriage for all the wrong reasons.

"We think that some couples who move in together without a clear commitment to marriage may wind up sliding into marriage partly because they are already cohabiting," said lead researcher Galena Rhoades of the University of Denver.

Couples might also be nudged into nuptials⁵ because of a joint⁶ lease or shared ownership of Fido - along with other practicalities.

Rhoades and her colleagues did telephone surveys with more than 1,000 married men and women between the ages of 18 and 34, who had been married 10 years or fewer. Survey questions included measures of relationship satisfaction, dedication⁷ to one another, level of negative communication and sexual satisfaction. To measure the potential of a couple to divorce, participants were asked "Have you or your spouse⁸ ever seriously suggested the idea of divorce?"

Overall, about 40 percent of participants reported they didn't live together before marriage, 43 percent did so before engagement, and about 16 percent cohabited only after getting engaged.

Those who moved in with a mate before engagement or marriage reported significantly lower quality marriages and a greater potential for split-ups than other couples. For instance, about 19 percent of those who cohabited before getting engaged had ever suggested divorce compared with just 12 percent of those who only moved in together after getting engaged and 10 percent of participants who did not cohabit prior to the wedding bells.

"We think there might be a subset of people who live together before they got engaged who might have decided⁹ to get married really based on other things in their relationship," Rhoades told LiveScience, "because they were already living together and less because they really wanted and had decided they wanted a future together."

So a joint lease or shared ownership of pets could nudge the nuptials for these folks, more than a life-long commitment to one another.