According to a new survey by, it appears that guys living with their girlfriends have less commitment to the relationship than the women their shacking up with. It turns out that guys are just not as sure the relationship will last.

52% of the guys surveyed said they 'were not certain their relationship was permanent,' and 41% admitted they were not 'completely committed' to the relationship.

In what seems like a no-brainer, researchers also said that non-married couples living together were twice as likely to break up than married couples.