YOU SAID:

my dad left and never came back my mom now dates a manatee

INTO JAPANESE

お父さんは去って帰ってこなかった

BACK INTO ENGLISH

Dad did not come back home

INTO JAPANESE

お父さんは家に帰らなかった

BACK INTO ENGLISH

Dad did not go home

INTO JAPANESE

お父さんは家に帰らなかった

BACK INTO ENGLISH

Dad did not go home