YOU SAID:

I have been lonely for so long...

INTO JAPANESE

私の孤独なので長い間されている.

BACK INTO ENGLISH

So lonely I have been for a long time.

INTO JAPANESE

孤独な私は長い間されています。

BACK INTO ENGLISH

Lonely I have for a long time.

INTO JAPANESE

寂しい私は長い間持っている。

BACK INTO ENGLISH

Lonely I have for a long time.