You ever notice a homegirl of yours put on some extra baggage around her waist after settling down with their special someone? Well you’re not seeing things because according to a new scientific study, childless women with steady partners tend to put on sufficient weight during the length of their intimate relationship.

The study, conducted by Annette J. Dobson, a professor of biostatistics at the University of Queensland in Australia, found that the average 140 lbs. childless woman in a long-term relationship tended to gain 15 additional pounds within 10 years.

Although researchers don’t believe that having a partner causes metabolic changes, they do believe the weight gain among childless women with partners is almost surely affected by the change in lifestyle.