answer: Mike broke up with Cathy. #Person1# feels sorry, but Mike doesn't want to get back.
documents: #Person1#: Hi, Mike. Haven't seen you for a while. How's Cathy?
  #Person2#: We are not seeing each other any more.
  #Person1#: What happened? Did you break up?
  #Person2#: Yeah. I got sick and tired of her nagging all the time.
  #Person1#: Oh, I am sorry. Maybe you were just emotional at that moment. Do you think you guys can get back together?
  #Person2#: I don't know. There's plenty of fish out there in the sea!
  #Person1#: Oh, you are such a dog!