Throw everything you know about human sexuality out the window, because science has proven nobody is 100% straight.
A recent study published in the Journal of Personality and Social Psychology has revealed both genders are attracted to men and women to at least some degree. Instead, sexual orientation should be viewed on a spectrum.
Researchers looked at gender expression in women and recorded their physiological response to viewing "a variety of pornographic material." By measuring the dilation of their pupils, they found that the participants were aroused by both heterosexual and homosexual sex, regardless of the sexual orientation they identify with.
In comparison, men's pupils also dilated when watching both men and women masturbate.
"You can't control your eye dilation. Essentially, that's what the whole project attempts to get at, another way of assessing sexuality without relying on self report," psychologist Ritch C. Savin-Williams, the lead author of the study, said.
He said this analysis is part of a greater research project, which will examine "true human sexuality through physiological queues."
"We show straight men a picture of a woman masturbating and they respond just like a straight guy, but then you also show them a guy masturbating and their eyes dilate a little bit," Savin-Williams said. "So we're actually able to show physiologically that all guys are not either gay, straight, or bi."
So how will this research affect us?