YOU SAID:
i don't not like liking my cousin
INTO JAPANESE
私はいとこを好きになるのが好きではありません
BACK INTO ENGLISH
i don't like to like my cousin
INTO JAPANESE
私はいとこを好きになるのが好きではありません
BACK INTO ENGLISH
i don't like to like my cousin
That didn't even make that much sense in English.