PLEASE, HOW DO I CONTINUE IN THIS MARRIAGE?

Please, how do I continue in this marriage?!!!

I got married to my husband for many years now without a child, and on the 15th year of our marriage, my husband decided we adopt a child. And after three years we adopted another, so we have a boy and a girl. 

The boy is fifteen years old, while the girl is almost twelve years old now. I noticed that the boy was looking more like my husband as he glows, nobody believed that we adopted those children, except for very close friends that knew about the adoption. 

I have never had any problem with my husband and I know he loves me a lot, I never lack anything and so also the children.

Recently I was searching through our drawer when I stumbled on the birth certificate of my two children, it brought about so many memories, but I noticed that my husband's name was written as the father on both certificates with different woman's names and the date they were born before we apply for adoption. 

I was so confused and confronted my husband when he came home from work that day. He looked at me and told me that the children are his, that he has to do it.

At the moment I am really heartbroken and don't know what to do next.

I can't believe that my lovely husband can cheat on me and deceived me into training another woman's child.

I don't think I can trust him anymore, and that has made me a little withdrawn from the children. 

Please, how do I continue in this marriage?

Cc || Mrs Meda