How do I expose the affair

[mb28]

Allen A
My H refuses to go to therapy. I told him he needed to talk to someone even if it's just a friend. There is someone he is becoming close to, that has told him that he thinks we can work out our problems. So he does have a close guy friend that is telling him to try to save the M. However, my H also cares a lot about what people think about him. And this friend has said in the past that he hates people who have A, and how wrong he thinks it is. So I don't think my H would talk to him about that part of our problems.

I think I need to see if my close girl friend will talk to him again. She has been on both sides of an A before, and her M is now more happier then it ever has been. My H is very close to her and her H too, so I think he might open up to her.