Dominant Wife and Slave Husband

Why does Mistress go so far? Just a few weekend sessions of BDSM has now become a rule where the poor guy has to wear dresses, be locked in chastity, take the enema, the strap-on, and her lover's penis! He's a cock-sucking pain slut...but whenever she asks if he wants to re-think the whole thing, go back to his loving relationship...he says no (reluctantly)