情书

hù tōng qíng shū

互通情书

carry on an ardent correspondence

gěi xǐ huan de rén xiě qíng shū

给喜欢的人写情书

write an amorous letter to one's sweetheart

xiě yī fēng jīng cǎi jué lún de qíng shū yě hěn zòu xiào

写一封精彩绝伦的情书也很奏效。

Writing a wonderful love letter works also.

tā zuì jìn gěi nǐ xiě guò qíng shī huò qíng shū ma

他最近给你写过情诗或情书吗？

Has he recently written a poem or love letter for you?