I think you are as befuddled as most.\nHeterosexual if taken literally means only male and female.\nHomosexual if taken literally means only same with same.\nBisexual refers to any person/s who have ever been with both sexes.  I when young did venture some male-male actions as a consequent of being that age, while now I do not pursue relations with any other human or animal: hence, I am asexual at this time in my life.  However, all considered, due to the sum of things past,I would have to be labled as a bisexual even though I did not enjoy those few curious events and for the bulk of my active life I was content with heterosexuality.  For the longest, always the woman so very worthy of my admirations and best regards.  I'm grateful for them making our babies and for recieving my birth.  Suggest you incorporate the facts of a lifetime in shaping your definition as being a matter of the person's actual history and who do you know that has never went the route of same-sex curiosity?  Life is but the sum of a person's total experiences and it better to be honest since any exception to the facts of venturing at least one bisexual act is a lying person.  Dig in, look at yourself,  What you'd do behind the garage?  Knock phonyness aside: You've been there too.  Amen.