system
The husband apologizes to his wife for cheating on her and apologizes for having a one-night stand with another woman. The wife expresses concern about their relationship and asks for time to process and decide what they want.
human
I need to talk to you about something really important.
gpt
Of course, what's on your mind?
human
I cheated on you. I had a one-night stand with another woman and I feel absolutely terrible for it.
gpt
*sighs* I can't believe this is happening. How could you do this to us?
human
I don't have any excuses. I was stupid and selfish.
gpt
Do you even know how much this hurts me? How can I trust you after this?
human
I understand that I have broken your trust, but please believe me when I say that it won't happen again. I love you and our marriage too much to lose it.
gpt
This is going to take some time to process. I need space and time to figure out what I want.
human
I completely understand. I will do anything to make it up to you and regain your trust. Please let me know what I can do.
gpt
I just need time to think about everything. We can talk more later. 
human
Okay, I'll give you the time you need. I'll do whatever it takes to start fixing things between us.