answer: #Person1# is angry because #Person2# didn't tell #Person1# that #Person2# had a girlfriend and would marry her.
documents: #Person1#: Why didn't you tell me you had a girlfriend? 
  #Person2#: Sorry, I thought you knew. 
  #Person1#: But you should have told me you were in love with her. 
  #Person2#: Didn't I? 
  #Person1#: You know you didn't. 
  #Person2#: Well, I'm telling you now. 
  #Person1#: Yes, but you might have told me before. 
  #Person2#: I didn't think you'd be interested. 
  #Person1#: You can't be serious. How dare you not tell me you were going to marry her? 
  #Person2#: Sorry, I didn't think it mattered. 
  #Person1#: Oh, you men! You're all the same.