system
The husband apologizes for cheating on his wife, expresses guilt and apologizes for violating his trust. The wife expresses her desire to rebuild trust and earn back trust.
human
I know I messed up big time. I shouldn't have cheated on you.
gpt
You're damn right you messed up. I never expected you to do something like this to me. 
human
I feel so ashamed about what happened. I never thought I'd be capable of something like that.
gpt
You should be ashamed. And it's not just because you cheated on me. It's because you made me feel like it was my fault.
human
I know, I know. I never should have blamed you for any of it. I was just trying to justify my own actions.
gpt
That's not even the point. You violated my trust. You betrayed everything that we built together.
human
I know, and I'm sorry. I don't expect you to forgive me right away, but I'm willing to do whatever it takes to make things right.
gpt
I don't even know where to start. How can I ever trust you again?
human
I understand that rebuilding trust takes time. But I'm willing to be patient and work on this together. I want to make sure that you never have to feel that way again.
gpt
I hope you mean that. Because I don't think I can go through something like this again. 
human
I promise you, I mean it. I'll do whatever it takes to earn back your trust and make up for my mistakes.