answer: #Person1# tells #Person2# Mary and Jack broke up because Mary found Jack cheat on her. Then #Person2# says they are different people so this ending is the best. They hope Mary could recover soon.
documents: #Person1#: Jack and Mary broke up. 
  #Person2#: it's so sad. They had been together for only two months. Do you know what the matter was? 
  #Person1#: Mary said Jack was cheating on her. Jack was seeing a girl from his hometown. One day, Mary saw them holding hands and ended the relationship immediately. 
  #Person2#: really? I'm very surprised. He doesn't look like a guy who'd ever do that sort of thing, right? 
  #Person1#: no, he doesn't. Anyway, she found out that he had been two-timing her for a long time. 
  #Person2#: maybe it is for the best. They are not suitable for each other because they have nothing in common and are completely different people. 
  #Person1#: how so? 
  #Person2#: he is an extrovert while she is an introvert. He likes parties while she hates them. 
  #Person1#: poor Mary! She really liked him. 
  #Person2#: anyway, she was right to end things and she deserves better. 
  #Person1#: do you think they'll get back together? 
  #Person2#: no, I don't think so. I know Mary. Once she makes a decision, she won't change her mind. 
  #Person1#: I hope she'll recover soon. 
  #Person2#: so do I.