That is not at all what I am saying. I cannot explain this to you better than I already have. Your diverging definition of heterosexuality describes a behaviour

That is not at all what I am saying. I cannot explain this to you better than I already have. Your diverging definition of heterosexuality describes a behaviour or a feeling. It does not apply to people being heterosexual. This is how definitions work. It describes a thing that this word can mean. If what you want it to mean does not fit into the definition, then that's not what it means.