YOU SAID:

That's My Boy daddy who don't know my boy

INTO JAPANESE

それは私の男の子を知らない私の男の子のパパです

BACK INTO ENGLISH

It's my boy's dad who doesn't know my boy

INTO JAPANESE

私の男の子を知らないのは私の男の子のお父さんです

BACK INTO ENGLISH

It's my boy's dad who doesn't know my boy