While stereotypes (and previous science) claimed bisexual men are just closeted gays, a new study conducted by Northwestern University offers evidence that male bisexuality actually does exist.
After Northwestern's 2005 study that concluded "with respect to sexual arousal and attraction, it remains to be shown that male bisexuality exists," researchers were much more selective about participants.
In the new study, researchers looked at 100 men who claimed to have sexual experiences with at least two people of each sex and a romantic relationship of at least three months with a person of each sex (as opposed to men in the 2005 study, who were recruited through advertisements in various gay and alternative publications and identified as heterosexual, bisexual, or homosexual based on responses to a basic questionnaire.)
In both studies men watched videos of both male and female same-sex intimacy while their sexual response was monitored.
The results showed that while bisexual men responded to both male and female videos, gay and straight men did not.
"Someone who is bisexual might say, 'Well, duh!'" lead study author Allen Rosenthal, a doctoral student in psychology at Northwestern, told The New York Times. "But this will be validating to a lot of bisexual men who had heard about the earlier work and felt that scientists weren't getting them."