kewlgirl,
This guy is letting your friendship go so easily. You are offended for a good reason. Reading your story, he never was your true friend. A friend is never someone who comes running to you only whenever HE has problems but is not there when you'd need help. It's a two way street. Also you do not abandon a friend for a new girl/boyfriend.
I am sorry to ask this, but was there ever during your friendship a romantic interest between you two? I get the feeling between the lines, but could be wrong. That might explain why he wants you to go, now that he has a new girlfriend. Also it might explain your willingness to do so many things for him. (Sorry if I'm reading it all wrong)
Maybe it would be better should you forget him altogether, he was a bad friend so why would you invite him in your life again. Don't leave any room for an "in case" scenario. He made his choice, good riddance! You will make new friends and no doubt will be a good friend to anyone.
Take care