Your comprehension appears to be lacking, so I'll try again.
I've already acknowledged that homosexuality is abnormal, by definition. I then asked you to define what makes someone a "normal being" since you claim that homosexual individuals are "abnormal beings" (note: These are your words. I'm trying to figure out what you mean here. In other words, DEFINE). Since you didn't understand the first time, I'm asking you to define what you think a "normal being" is. Since the only thing you decided to bring up was sexuality, I asked if sexuality defines whether someone is a "normal being" or not. Please let me know what about this you aren't understanding.
You make no sense when you state that bisexuals can be homosexual but not heterosexual. Heterosexuality: sexual feeling or behavior directed toward a person or persons of the opposite sex. Homosexuality: sexual feeling or behavior directed toward a person or persons of one's own sex. You can re-think this one again.
Since you appear to be creating your own definitions for words, please state them so that we can figure out what you are trying to say.