The estimate derives from ''The Social Organization of Sexuality,'' a 1990 study, that found that 3.9 percent of American men who had ever been married had had sex with men in the previous five years. The lead author, Edward O. Laumann, a sociologist at the University of Chicago, estimated that 2 to 4 percent of ever-married American women had knowingly or unknowingly been in what are now called mixed-orientation marriages.
Katy Butler, "Many Couples Must Negotiate Terms of 'Brokeback' Marriages," The New York Times, March 7, 2006
photo caption, "An Army of Davids Attacks Barry C. Lynn," Wonkette, March 7, 2006
James Verniere, "'Imagine' a sappy Sapphic flick," The Boston Herald, February 3, 2006