Bonjour, une personne voudrait-elle bien corriger mes erreurs ? En espérant qu'elles ne soient pas nombreuses. Merci d'avance Dear Michael, My sweet, i'm sorry

However et non howerver.
when I receive et non went i receive
je dirais plutot going to make you sad plutot que going to sadden
je dirais I'm sure with time it will pass because it's your father

bref je dirais ceci : 
Dear Michael,
My sweet, i'm sorry it's taken me so long to answer at your letter. For begin, i would tell you that i'm so sorry to have you let believe that i couldn't accept your homosexuality.. However, i don't you lie, went i received your letter, i'm wondered what I had badly made in your education because i didn't wish that for you... But you are my son and it's my duty to accept you for what you are really because i love you.
Now, What i'm going to tell you is certainly going to make you sad , but it's necessary. Michael, when i read your letter to your father, he hasn't took well this « new » and i think he will have need more time to accept but i know that although he have this penalty inside him, i'm sure with the time he will pass  because it's your father and in spite of that he love you Michael !
You know my son, after have read your letter, I couldn't help but shed a few tears because that sadden me to know that you have owed to leave us and go to san francisco to find finally your place... May be that if our culture and our education blinded us not so much and imposed us no such prejudice, you could have stayed at my side.
 Hoping that one day you come back to me, my sweet.
Your loving Mom.