YOU SAID:

oh they was best friends you couldnt seperate em

INTO JAPANESE

ああ、彼らはあなたがemを分離することができなかった親友だった

BACK INTO ENGLISH

Oh, they were best friends you couldn't separate em

INTO JAPANESE

ああ、彼らはあなたがemを分離することができない親友だった

BACK INTO ENGLISH

Oh, they were best friends you can't separate em

INTO JAPANESE

ああ、彼らはあなたがemを分離できない親友だった

BACK INTO ENGLISH

Oh, they were best friends you can't separate em