This attitude to nursing was new after the Second World War. Victorian matrons had fiercely protected their probationers from attentions of doctors. Later, between the wars, the General Nursing Council debated "purifying the profession" and removing nurses from the register for sex outside marriage. Doctor-Nurse romances were a popular post-war Mills & Boon sub-genre. Most authors were, or had been nurses. This proved important, since what contemporary readers demanded more of was not sex but details of clinical practice.
Below is a list of resources that accompanies the theme of romance and nursing.
Love, fear, and health: how our attachments to others shaped health and health care by 
Staff nurses in love by 
Cherry Ames, Chief Nurse by 