[Dimensio]

A bisexual is someone who is attracted to both the same and opposite genders. A homosexual is someone who is exclusively attracted to persons of the same gender and a heterosexual is someone who is exclusively attracted to persons of the opposite gender.

Behaviour is irrelevant; someone who remains celibate their entire life could be heterosexual, homosexual or bisexual. If a man has a monogamous relationship with only one woman in his entire life but he is still sexually attracted to someother men (in addition to women) then he is bisexual. Refusing to accept those definitions simply because you don't like them is absurd.

[SkyPilot]

Behaviour is irrelevant;

That is the most absurd thing I have ever read. If I were you, I would study up on Morality 101 before you give advice again.

The poster was correct. They are just plain deviant. "Bi-sexual" is as useless as a term as "Gay."

[Right Wing Professor]

Behaviour is irrelevant; someone who remains celibate their entire life could be heterosexual, homosexual or bisexual. If a man has a monogamous relationship with only one woman in his entire life but he is still sexually attracted to someother men (in addition to women) then he is bisexual. Refusing to accept those definitions simply because you don't like them is absurd.

And your supreme authority over the English language comes whence?

Attraction is a vague concept, and without any hope of objective proof. Your definition leaves 'homo-, hetero- and bi-sexuality ' solely to be defined by the individual him/herself. That's inherently solipsistic. I would submit that both usage and logic favor behaviorally-determined categorization. It makes no sense to categorize, say, a woman who has had sex only with men but has occasionally found another woman attractive as bisexual.