Complete these dialogues with must, might/may (not) or can't.
Dialogue:
A: Why don't you tell me what is the matter with you?
B: Well, I should tell you something and I think you like it.
A: Come on! Tell me what it is. It be that bad.
B: I don't know. I'm afraid you react badly.
A: Then I'm sure it be serious. Please, tell me.
B: I saw Lindsey holding hands with another man.
A: What?
B: Please, I know you be upset right now, but...
A: Dude, Lindsey and I broke up more than a year ago. Didn't you know?