I think he is basically angry that she didn't tell him and that everyone seems to know except him. He yells out to the square "is there anyone who doesn't know?!" Stacey is crying and says "Why are you being like this?" and he says "'cos I don't like being lied to!" and she says "I'm not lying!" he then asks why she didn't tell him sooner and she says she was scared of what it would mean for them.
I can't bring myself to watch it anymore. Bradley what are you doing! :crying: