I am falling in love with you.

我和你双双坠入爱河。

youdao

Never frown, even when you are sad, because you never know I am falling in love with your smile.

纵然伤心，也不要愁眉不展，因为你不知这样我会爱上你的笑容。

youdao

Never frown, even when you are sad, because you never know I am falling in love with your smile.

纵然伤心，也不要愁眉不展，因为你不知是我爱上你的笑容。

youdao