D. H. Lawrence 
Captain’s Doll 

The story chronicles the journey of fallen German aristocrat Countess Johanna ‘Hannele’ zu Rassentlow as she dates a Scottish officer of unusual philosophy. The relationship develops into one of D. H. Lawrence’s idiosyncratic ‘wicked triangles’. The intimate relationship between Captain Alexander Hepburn and Hannele is intruded upon when the captain’s wife Evangeline travels to Germany suspicious of foul play. (Wikipedia)