love affair
noun
1- a romantic or sexual relationship between two people, especially one that is outside marriage（尤指非夫妻间的）恋爱关系; 风流韵事; 婚外恋情。
1.1
- an intense enthusiasm or liking for something强烈兴趣; 亲近：
he had a lifelong love affair with the cinema.
他一生都非常喜爱电影。