OK, I'm a woman married to a man. Is it permissible for us to engage in the full range of sexual positions and practices, because statistics show that most couples do?
 If not, what would you propose to do about it, because I'm sure there are more couples engaging in such practices than there are same-sex couples. And if it is permissible for married couples to engage in the full range of sexual practices, why isn't it also permissible for same-sex couples? 
I have degrees in scripture, and I don't know that these questions are addressed, so when a priest calls for discussion, I think he's on the right track.