My girlfriend bought me an X Box with the condition I could only play when she wasn't there. Every time she left town I would play games with the guys. By the time I missed her she was home! My dad always laughed and said she was the smartest girl in the world because she knew exactly how I ticked.
Just walk away. Break the wrist and walk away.
Well you can tell him to go on like a road trip or something like that with his friends while your gone. That way he wont be bored and he wont have time to think about you.