answer: #Person1# and #Person2# can't believe that Alice and David, who fought with each other, got engaged.
documents: #Person1#: Have you heard about Alice and David?
  #Person2#: No, have they had another fight?
  #Person1#: No, they've got engaged.
  #Person2#: You must be joking. Those two?
  #Person1#: Well, my dear, I didn't believe it either. But I got it straight from the horse's mouth. David called me this morning.
  #Person2#: So when did this all happen?
  #Person1#: Last weekend, while they were on their ski trip.
  #Person2#: Well, I believe it now, and when are they are getting married?
  #Person1#: Next June.
  #Person2#: I can hardly believe it.