In the story "The Horse Dealer's Daughter" after Mabel and Ferguson realize their love, why does Lawrence explore these feelings so extensively?

This is really a very interesting love story to analyse
and think about. Key to understanding what Lawrence does in it, however, is to realise
how he saw society as a repressive influence that often created a tension between our
private passions and our public standing. One of the many reasons why Lawrence spends so
much time focusing on the characters once they are seized by their sudden passion is
that he wants to explore this conflict, especially from the angle of
Ferguson.

For him, an educated, professional man, he fights
against the way that love disempowers him from an intellectual standpoint. After his
quasi-baptism experience along with Mabel in the pool where she tries to drown herself,
however, he yields regretfully to love. Note how his reason seems to combat his
feelings. On the one hand, when Mabel says to him "Do you love me, then?" we are told
that "his soul seemed to melt." However, just a couple of paragraphs later, note his
feelings:

He
had never thought of loving her. He had never wanted to love her. When he rescued her
and restored her, he was a doctor, and she was a patient. He had had no single personal
thought of her. Nay, this introduction of the personal element was very distasteful to
him, a violation of his professional honour. It was horrible to have her there embracing
his knees. It was horrible. He revolted from it, violently. And yet--and yet--he had not
the power to break away.

Note
the massive conflict within him, that despite his stern attentions to not be swept away
by love, is won by his new-found passion for Mabel. He in the end follows his heart, and
we are left with their impending marriage and the idea that their future life together
may not be so easy as they continue to have their various struggles over
love.