A new study says you can't fool your sex partner by faking satisfaction. The study also found that women and men are equally able to determine their partners' levels of sexual satisfaction.

The Canadian study included 84 couples whose members were individually asked about their levels of sexual satisfaction, sexual communication, ability to recognize emotions and relationship satisfaction, WebMD reported.

"We found that, on average, both men and women have fairly accurate and unbiased perceptions of their partners' sexual satisfaction," lead author Erin Fallis, of the University of Waterloo, said in a university news release.

The study was published in the April issue of the journal Archives of Sexual Behavior.

"Over time, a couple will develop sexual routines," Fallis said. "We believe that having the ability to accurately gauge each other's sexual satisfaction will help partners to develop sexual scripts that they both enjoy."