flirtation
noun uk/flɜːˈteɪ.ʃən/ us/flɝːˈteɪ.ʃən/
(SEXUAL ATTRACTION)
[ C or U ]调情
a situation in which someone behaves as if sexually attracted to another person, without being seriously interested
It was a harmless flirtation and nothing more. 那只是无伤大雅的打情骂俏罢了，没别的。
(INTEREST)
[ S ]一时兴起，心血来潮
a short period of being interested in something or doing something
a brief flirtation with communism 对共产主义的一时兴趣