Sue was seen dating an old flame.

有人看见苏跟旧情人约会。

《柯林斯英汉双解大词典》

She met an old flame at the party.

她在聚会上遇到了旧情郎。

《牛津词典》

Does something remind you of an old flame?

是不是有什么事使你想起了你的旧情人？

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"As Henry VIII discovered, with at least two of his wives, this is the perfect place to bring an old flame, " Mr Johnson said.

BBC: Highwire act Boris Johnson defies political gravity

Shortly after the end of the Second World War, a reporter named Jake Geismer (George Clooney) returns to Berlin, where he meets an old flame named Lena Brandt (Cate Blanchett).

NEWYORKER: The Good German

Now, an old flame has the country's heart.

WSJ: America's new love: Water