"If Uncle Nathan were truly devoted, he wouldn't have sent his disabled wife back to her parents' home!" Beatrice said indignantly, continuing under Nathan Moore's gaze.
"A man who despises his own lawfully wedded wife, what devotion is there to speak of!"
Expecting Nathan Moore to get angry, or at least annoyed, Nicholas was about to intervene and explain for Beatrice when he heard Nathan say, "The woman I married is Titus Zane. On our wedding day, she received the blessings of the Priest in the church."
Thus, nominally, she is indeed his lawfully wedded wife.
And Olivia Zane, at best, is just an ex.
It's not that he is heartless; some things, some people, are like aged wine. It takes years to find out that, in fact, this one suits you best.
Unconvinced by Nathan Moore's explanation, Beatrice retorted sharply with her chin up and neck stiff.