YOU SAID:

hello! long time no see.

INTO JAPANESE

こんにちは！長い間あっていませんでしたね。

BACK INTO ENGLISH

Hello! We haven't been together in a long time.

INTO JAPANESE

こんにちは！私たちは長い間一緒にいません。

BACK INTO ENGLISH

Hello! we haven't been together for a long time.

INTO JAPANESE

こんにちは！私たちは長い間一緒にいません。

BACK INTO ENGLISH

Hello! we haven't been together for a long time.