“please look up the definition of marriage in the dictionary. It is a coming together of two very different entities (and you can’t get more different than a man or a woman) and making them into one thing”
This can’t be a valid argument can it? Words are socially defined/constructed and have no inherent value attached to them. For instance many if not most dictionaries written recently define marriage as a legal contract between “spouses” (as opposed to man and woman).