YOU SAID:

For so long, to be with him was my happiness.

INTO JAPANESE

長い間、彼と一緒にいることが私の幸せでした。

BACK INTO ENGLISH

It was my happiness to be with him for a long time.

INTO JAPANESE

彼と長い間一緒にいられたことは私の幸せでした。

BACK INTO ENGLISH

It was my happiness to be with him for a long time.