The attraction of the opposite sex

the psychological aspects of
being male or female.

I am a woman and I like women

I am a man but I am not sure if I like just women.

are the culture’s expectations for behavior of a person who is perceived as
male or female, including attitudes, actions, and personality traits associated with a
particular gender within that culture

Research suggests that there are biological differences between heterosexuals
and homosexuals, and that there may be genetic influences as well.