Sentence:  The inquest on keeper Davidson was duly held, and at the commencement seemed likely to cause Tony Palliser less anxiety than he had expected. Northrop knew all about Tony's <WSD>flirtation</WSD> with Lucy Davidson, but it also knew a good deal more about that lady than Tony did, and exculpated him. 
Meaning of the word marked with <WSD> tags:  Playing at courtship; coquetry.