YOU SAID:
Happiness is my foreber girlfriend babe yo
INTO JAPANESE
幸せは私の前身のガールフレンドベイビーよ
BACK INTO ENGLISH
Happiness is my predecessor girlfriend baby
INTO JAPANESE
幸せは私の前任のガールフレンドの赤ちゃんです
BACK INTO ENGLISH
Happiness is my predecessor girlfriend baby
That didn't even make that much sense in English.