Sentence:  Of course, the young people <WSD>flirted</WSD>, for that diversion is apparently irradicable even in the "best society". 
Meaning of the word marked with <WSD> tags:  (to play at courtship) To play at courtship; to talk with teasing affection, to insinuate sexual attraction in a playful (especially conversational) way. (from 18th c.)