There has been an on-going dialogue in the printed Eagle on gender fear and I believe the fear of sexual orientation resides in learned behavior. People have grown up where public activities involve two restrooms. These are facilities for female and facilities for male. Children learn that males use the boys' room and females use the girls' room in public schools. The shopping malls and sports stadiums also provide two facilities that separate the sexes. The more instances that a developing child encounters this separation the more it reinforces matters involving the opposite sex as private. So now introduce someone who is attracted to the same sex using the their sex's public restroom. To many that could be like a man using the woman's public restroom or vice versa. In school it may have been a dare or the result of a bully pushing an unwilling participant into the other sex's restroom for embarrassment. Nonetheless, the fear has been conditioned the more a person has experienced and expected this separation for privacy. Having someone of the same sex in this public but private area would likely contradict what society has embedded since being a child. So if one needs to find a cause for the fear look only to this established norm and decide if its practice should be public or private.