YOU SAID:
We were friends for so long and it had to end
INTO JAPANESE
私たちは長い間友達だったので、終わらなければなりませんでした
BACK INTO ENGLISH
We had to end because we were friends for a long time
INTO JAPANESE
私たちは長い間友達だったので、終わらなければなりませんでした
BACK INTO ENGLISH
We had to end because we were friends for a long time
That didn't even make that much sense in English.