The scientific community has been a little “iffy”, to say the least, about bisexuality. However, researchers at Northwestern University say that there’s evidence to show that some men who identify themselves as bisexual are, in fact, sexually aroused by both women and men.
For a long time, bisexuality has been held in doubt. The phenomenon has been perceived more as a case of being a closeted homosexual than as a genuine attraction for people of both sexes.
http://www.nytimes.com/2011/08/23/health/23bisexual.html?_r=1&hp
