Sexual orientation includes homosexuality, heterosexuality and bisexuality and also includes perceived orientation.
In spring 2007, MTV and Tila Tequila developed a new reality program based on Tila's bisexuality, which eventually hit the air in fall 2007.
This time, the contestants were well aware of her bisexuality.
Bisexuality is the sexual and emotional attraction to members of both sexes.
References to homosexuality and bisexuality can be found in recorded history and literature dating back thousands of years.