Ummm... just apologise... why are you acting so quiet? You've convinced your self to make a step forward, but instead you made the big one step back. Of course, he'd feel deceived and heartbroken. He's also a human. Why can't he get angry? And so... you do what? You do nothing. By the way, your having no ability to speak isn't connected to the incident of argue with your friend. Because, back then you were still quiet.