YOU SAID:
I like watermelon and love to dance
INTO JAPANESE
私はスイカが好きで、ダンスが好きです
BACK INTO ENGLISH
I like watermelons and I like dancing
INTO JAPANESE
私はスイカが好きで、私は踊りが好きです
BACK INTO ENGLISH
I like watermelons and I like dancing
That didn't even make that much sense in English.