Yup. regardless of his attitude, you are doing this for you. Ultimately, it's your life you have to save. What's his body type? As I am sure you know, food has this tendency to be mmmm, sort of controling. Kind of like a junkie whose partner is giving up the junk, he may fear losing somebody whose behavior enabled him to be bad too. I dont know the particulars, but it's your life and I congratulate you on taking the steps to save it.