I have heard of this before. When we are overweight we loose ourselves and hide behind family and try to stay as small as possible and hide in the shadows. Gradually we are no longer the people we were.
I used to work in a Adult Education College. Every two years a new full time Art Course began. There were lots of middle aged ladies took the course and over the 30 hour week they put in these ladies slowly changed, their personalities and confidence began to blossom. You could physically see it happen. Many of these ladies left their husbands. They were different.
My husband was finished from his very physical job because of his ill health and lost all his confidence. It really shook him and he changed for the worse. I was his verbal punch bag. I took it for 2 years. I found somewhere else to live and gave him the ultimatum. You stop all this mental cruelty and go back to the man I love or I am gone in a week. With in a day he was back to the man I know and deeply love. He had it all but couldn't see it.
What I am trying to say in a roundabout way is confidence or lack of it, changes us. It changes the people around us. I would put a plan in place just so you have a bolt hole. Try speaking to your husband, tell him how you feel, try counselling. You never know you may meet in the middle again. You will always know you tried everything