They were childhood sweethearts.

他们俩是青梅竹马。

I have had such an immense number of sweethearts!

我有过那么多的情人！

A few people who yearn for love bename the tree as "Sweethearts bird".

一些对向往爱情的人将这种树取名为“鸳鸯树”。

We were high school sweethearts.

我们过去在高中里青梅竹马。

There are so many sweethearts in the park.

公园里有很多恋人。