<human>: I've been married to my wonderful husband for three years now and we have two 1 year old sons (twins).

Earlier this week a woman contacted me, I know of her (I didn't know her). She is ex girlfriend of my husband. They were together for a very short time. She asked to meet to talk about something really important. So we met yesterday. She told me that after she had broken up with my husband she realized that she was pregnant and she told him that she got an abortion. My husband told me about this.

In reality, she never had that abortion. She had the baby and never told my husband. Since they didn't remain in contact my husband never knew of the child's existence. And the child has now passed away because of Neuroblastoma. She said that she couldn't live with herself if she didn't reach out to us and leaves it in my hands whether to tell my husband or not.

So now I'm left with this devastating news which I don't know whether to tell my husband or not. He'll be devastated to hear that not only he had a child that he wasn't in there for him but the child spent a long time being ill and my he didn't do anything to help, and the child is now gone. If he knew the child he would have wanted to be in his life and be there for him in his time of need. This news will destroy him. On the other hand it's the truth, and I don't know how hiding this might affect him in the long term if he ever learns.

The child's mother told me that nobody else knows my husband is the father and she herself won't ever contact us again. 

I don't know what I should do. It's such a huge thing and I don't know if I should keep it from my husband for the sake of sparing him the pain.

Can you give me a shortened version of the text?
<bot>: Husband had a son that he didn't know about who died recently. I don't know if I should tell him or keep this secret forever.