YOU SAID:
God only knows how much i love your dog
INTO JAPANESE
神はあなたの犬をどれだけ愛しているかを知っている
BACK INTO ENGLISH
God knows how much you love your dog
INTO JAPANESE
神はあなたがあなたの犬をどれだけ愛しているかを知っています
BACK INTO ENGLISH
God knows how much you love your dog
That didn't even make that much sense in English.