Ladies, we might be screwed. All of that hard work we've put into figuring out what makes our sexy sounds sound as authentic as possible is for nought. It turns out, people are a whole lot better at reading their sexual partners and their satisfaction than most of us would believe.

In a study by the University of Waterloo in Ontario, 84 heterosexual couples were asked about their satisfaction with their relationships and sex lives in addition to how often they discussed their sexual needs with their partners. They also participated in an exercise that measured how well they could read others people's emotions. Turns out most partners can tell how much their significant others are satisfied. Even if they don't normally discuss such things.

We found that, on average, both men and women have fairly accurate and unbiased perceptions of their partners' sexual satisfaction. 

Oops! Looks like we can all see right through each other. Crap. Now what? Experts believe this will improve our communication:

Specifically, being able to tell if their partners are sexually satisfied will help people decide whether to stick with a current routine, or try something new.

Considering the research only covered heterosexual people in relationships, this doesn't 100% discount the power of the fake orgasm (Oh, it HAS power). But as great as it is to be a good "faker" , actual satisfaction is probably better.

[LiveScience]