YOU SAID:
eating because my mouth is lonely
INTO JAPANESE
口が寂しいから食べる
BACK INTO ENGLISH
I eat because my mouth is dry
INTO JAPANESE
口が渇くから食べる
BACK INTO ENGLISH
eat because you are thirsty
INTO JAPANESE
喉が渇いたから食べる
BACK INTO ENGLISH
eat because i'm thirsty
INTO JAPANESE
喉が渇いたので食べる
BACK INTO ENGLISH
i'm thirsty so i eat
INTO JAPANESE
喉が渇いたので食べる
BACK INTO ENGLISH
i'm thirsty so i eat
That didn't even make that much sense in English.