Aww bad luck. Why don't you take part in the challenge anyway. I think you can get pedometers pretty cheaply on the Internet. I have one, and I am always surprised that I still don't manage the 10,000 recommended steps a day, even though I walk to Uni and back and usually browse round town.
Yay, Im glad you're back with your boyfriend but I know what you mean about the "comfort happy bad eating no exercising zone". (I love your phrasing by the way! :) ) If you look back at some of my journals you can see that my bad eating is directly proportional to time spent with my boyfriend!
Why is this! And.. its so unfair that men can eat more than us!