How do I expose the affair

[mb28]

H wanted to come over tonight to talk. His first question was: "Are you sure your done and want me to file?"

Me: Are you done, do you want the divorce?
H: No, I change my mind every day. I don't know what I want
Me: For 6 months you have told me everything that I've done wrong. Some of it I agree with and others I do not.
H: I just don't see how it will ever work
Me: I'm sorry you feel that way. I can not give you any guarantee that it will work between us, but it's worth trying
H: I did try, for 4 years
Me: I appreciate that you tried. However, I didn't know that you were unhappy and I was never given the chance to meet you half way
H: I just don't want to always rehash these last 6 months. And I know that you will hold this over my head for the rest of our lives.
Me: I don't want to rehash all this either that is why we need therapy. We need to learn how to work our these issues so we can move forward. I done not trying anything and I'm done being hurt
H: What am I doing that is hurting you?
Me: You know, and I don't want to bring that issue up
H: She is just a friend
Me: It's a friendship I'm uncomfortable with. And there can never be an us if you guys are friends
H: See you are trying to control me
Me: I'm sorry you feel that, but that is not true. It's your life, your choice not mine. I'm just telling you what I'm willing to accept
H: So do you want me to file
Me: I never wanted this marriage to end and I don't want a divorce, but I am done not doing nothing. I understand you feel you need time, but your not just going to wake up someday and decide to come home. You need to either make a leap of faith towards our marriage or out of it. It's your choice.
H: Maybe we should try therapy then.

I will see my therapist tonight, and he wants me to ask if he'll see both of us next week. I wasn't expecting that, but I'm not trying to get my hopes up either.