She was nice to me! I told her how much I hurt and that I was in cancer treatment. She said - he lied to you, I won't. I will end it today. I have a very strange feeling now. She said why did he tell you, I don't want anything. I explained to her how I found out.
Was it wrong to contact her? He will miss her now and try to get their relations back.

Well, at least you had a decent discussion with her. Lucky!

While she may be telling you the truth...don't bet the house on it. Beware! She may end it, she may not. Even if she does, he may continue to try to hang on. If she doesn't and your H ends it, she may try to hang on. Rough waters ahead regardless.

You're correct, he will miss her if she truly ends it. He's been getting all his needs met by two women. Not a bad deal from his POV. But not a very good deal for either of the women.

There is no way of know how your H will react, too many different ways to go. He may be relieved. He may be mad that you contacted her, especially if he's been lying to both of you. He could began receiving h*ll from two women for his stupidity and lies. He could decide to just throw in the towel on either the affair or the marriage. Worst of all is if he attempts to keep the status quo and began a new round of lies trying to continue in his marriage and his affair. Only time will tell.

Good Luck!

You are right - only time will tell. But I was nice to her, I didn't tell her one bad word! If I find out something again I can tell her Look, but you promised! Though I doubt i will ever do it again.
He said he was attractd to her and asked me to give him time to end this.
So far I told him that I want to end our marriage (And I feel loike it!). He wouldn't listen to me, he said you are not going to throw our life away for this. He wouldn't even talk to me about that.
At least I now know for sure that she is not younger than me. That makes me feel a little better.
It is so hard to calculate what should be done and not to make mistakes!