love affair noun
plural ∼ -fairs 1 [count] : a romantic or sexual relationship especially between two people who are not married to each other
▪ His wife discovered that he was having a love affair [=having an affair] with another woman. ▪ Theirs was a great love affair. [=they were very much in love] 2 [singular] : a feeling of great interest in and enthusiasm for something — + with ▪ The book describes America's love affair with baseball.
▪ His wife discovered that he was having a love affair [=having an affair] with another woman. ▪ Theirs was a great love affair. [=they were very much in love]
