system
trusting: I had a boyfriend who cheated on me. He promised not to do it again, but then he did. 
human
I can't believe I was so stupid to believe this...
gpt
What happened?
human
My boyfriend.  I knew he cheated on me but he said he wouldn't do it again. 
gpt
Well, you gave him the benefit of the doubt. It was his decision to cheat. 
human
True. Makes me feel so dumb though!
gpt
Now you have more information to base your next decision on. You live you learn.
human
Agreed!