It is, first, that the Chatterleys' marriage had already withered from within. The wife had sought to hold together her companionship with a husband half paralysed and half mad, but her efforts did not avail. Secondly, she herself is changed by Mellors from frustration and physical decline to being vitally alive. Thirdly, their relationship becomes a dedicated one - and, contrary to the prosecution's view, with a real hope of ultimate and lasting marriage. Fourthly, as one of the clergy said, this is a novel and not a tract.
Novels deal with life as it is.