You would need to discuss it if in the course of visiting one of our numerous lake park playgrounds here in Mn, you are faced with the question: "daddy, why does that boy call both of those men, 'dad'"?
age appropriate responses are always best....the most obvious answer to the questioned asked is “I don;t know.” This is a truthful answer....for you do not KNOW why....for all you know the two men could be ‘dad’ if one was the father and the other married to the mother. Divorce is more prevalent than homosexuality.
Now is it likely that this is the explanation??? Who knows? More importantly I find that in dealing with questions from children it is best to be accurate (state knowledge not guesses), succinct, and sometimes redirecting. In the big scope of the child’s life, this question does not require an explanation of homosexuality or anything else. It requires a parent to be diplomatic when suggesting to the child that it is none of their business why the boy over there calls those two men dad....Minding one’s own business is a good habit to form early