they do get more supportive as the process goes on. My fiance' was 100% against me getting the surgery. The night before i had it he started a big fight on purpose. I sat on the bed next to him crying my eyes out and tried my best to explain why I needed this. I have never told him how much I weighed, he never imagined it was 341 pounds. I told him I needed this for my 2 small children, for our future because if something didn't change I wouldn't make it to the future. He was scared. the morning of surgery he apologized and started to cry and said please come back home. He was so afraid I would die in the hospital. His previous wife had died her sleep and he didn't want to lose me to. He is seeing how much it is helping me and slowly starting to support me. He still says things like "are you sure you can eat that" which gets on my nerves because he has no clue. I told him the answer to getting rid of the fears is to research and read. I tried to involve hiom in the research process but he never thought i'd actually go through with it and ignored me. He is a little worried of how things will be after the weight loss and says things like " ill have my bags packed when you get small". just insecurities. He knows i wouldnt go anywhere. we have beautiful children together and i love him so very much because he has always saw beyond my flaws and accepted me as i was.
All we can do is reassure those that we love that this is safe and necessary. we are doing it because we dont want to have to miss a moment with them. Life is short enough as it is. This will prolong our lives so we can share one more smile and make one more memory.
Give him time, give him the material, and tell him you need him to be on your side through all of this. If he truly loves you he will want nothing more than to see you happy and healthy.
All in all, do it anyways and let time work its magic on him. he will change his mind!