The night before we were to be married, she had an affair with my best friend.
私たちが結婚する前夜、彼女は私の親友と関係を持っていました。
She penned a tell-all memoir of her affair with the president.
彼女は大統領との関係を暴露した回想録を執筆した。
That guy is having an affair with your sister!
あいつ お姉ちゃんと浮気してんだよ!
It was a terrible affair.
ひどい事件だった。
The Japanese Dentists Association affair is an incident concerning secret donations from the Japanese Dentists Association to Diet members belonging to the LDP.