It's not called FORNICATION when you are married to each other before God! Are you denying a BIBLICAL fact??? Both Luther and his wife LEFT the false religious system of Roman Catholicism - just as many STILL do today. These people are not slaves to a system they no longer accept. Better that they leave and get married to each other than sneak around and fornicate while still in a clerical system that demands celibacy (i.e., Pope Julius II, Pope Paul III, Pope Pius IV, Pope Sergius III, Pope John X, Pope John XII, Pope Alexaner VI, et al).
Shall we speak of Luther and his support of bigamy for the rich and powerful? And his claim of Biblical support for same?
His "wife" left it hidden in a barrel. Neither was free to marry.