Edith Wharton,
The Custom of the Country
“ And Chelles himself attracted her: she thought him as "sweet" as she had once thought Ralph, whose fastidiousness and refinement were blent in him with a delightful foreign vivacity. His chief value, however, lay in his power of exciting Van Degen's jealousy. She knew enough of French customs to be aware that such devotion as Chelles' was not likely to have much practical bearing on her future; but Peter had an alarming way of lapsing into security, and as a spur to his ardour she knew the value of other men's attentions. ”
