All animals reproduce, but only humans swipe left.

For many people, rejection and disappointment are necessary evils of dating. These feelings can be discouraging, but a new study suggests that the emotions may be far more common than they seem on those loneliest of nights.

In the study, the researchers found that roughly 50 percent of people have trouble finding or keeping a romantic partner. And if this characterization applies to your life, the study authors offer a glimmer of encouragement: It’s not you — it’s evolution. [13 Scientifically Proven Signs You’re in Love]

“Nearly 1 in 2 individuals faces considerable difficulties in the domain of mating,” said lead study author Menelaos Apostolou, an associate professor of social sciences at the University of Nicosia in Cyprus. “In most cases, these difficulties are not due to something wrong or broken, but due to people living in an environment which is very different from the” environment they evolved to function in.