I hate to be blunt in this situation.....but.. This isn't about him it's about you and your health. You must put yourself first or you will die. He can either get on board or he can lose you because of health problems caused by being obese. My husband wasn't on board and still isn't on board. But if I hadn't put myself first I was headed for certain death before I hit 40 years old. I hope for your sake he comes around. Insecurity is an ugly thing and I hope he doesn't lose you because he can't put you and your health first.