Wow! Yes, if anything you should be doing this for yourself. He really doesn't have a right to set goals for you. And if he feels that he does, what has he done to improve his image lately? I fear from the whole tone of your original posting that this isn't going to work out well. You may loose weight and get to size 5 and 120 lbs., but his attitude needs to change as it sounds rather abusive. I don't mean to be sticking my nose in your business, but it just sounds that way to me from your description.

He should be there celebrating your loss with you. He should love you no matter what size you are.

I'm wondering if there isn't something else going on besides his issue with your weightloss.