I think we all share similar experiences with food. I would eat everything on my plate and then help my wife finish her meal as well. I was also not a big snicker, I ate high calorie, high fat food and because of chronic pain did not move much because of it. I have had several surgery and still have pain but at least I am moving more now.
I had just opposite experience with my wife, she was the one who was onboard from the beginning. When I kept saying I can do this without surgery she supported me on my decision. When I lost 60, 70, 90,105lbs and gained it all back, she supported me. When I was ready to have surgery and fought my insurance company she was right there with me.
My wife told me she was happy that I had the surgery because she was tired of my struggles with my weight and she has known me for much of my life. Have a heart to heart with your husband and let him know that you and he can never be truly happy until you are happy with yourself. Trust me I have spent most of my life hating myself because I was of a normal weight like so many others. I too did not like my wife being viewed as a chubby chaser and we avoided, certain vacation places and activities because of my weight, she didn't want us to be uncomfortable. Tell him about all the things you and he will be able to do once you are lighter and will be able to stay that way for life.