Husband has Fetish and it's affecting my marriage

Newbie here, but looking for honest feedback and hopefully some encouragement that things can work out. My spouse is extremely attracted to BBW and SBBW (definite fetish). I did not know this at the onset of our relationship 18 years ago. I was definitely not his ideal type physically. I was a college athlete at the time. Anyhow, we were best friends (or so I thought) and moved forward with a romantic relationship. I eventually found out about this fetish by accident and suddenly more things made sense to me. I did not know how deeply it affected him though and unfortunately did not realize that until after marriage. I'm a bit co-dependent and eventually started gaining wait. A little here, a little there. Over the past couple of years I've been depressed over it and the fact that I feel objectified. Ihate the way I look and feel. Everything revolves around my weight and appetite in this relationship. I hate it. I've lost sense of self. I started losing weight after my second child and he appeared supportive, but sad. When the weight started coming off he became hateful toward me. Then when that didn't work he turned inward and I was worried he'd hurt himself, so I stopped losing weight. Over the past six months, we just kind of co-exist to raise our kids with the occasional passive aggressive comment about me being unattractive to him. It's gotten to where I don't want to eat around him. He focuses on it. We have no physical relationship and haven't for almost a year now. There are days to weeks where he shuts off entirely and won't talk to me or acknowledge me. I feel manipulated. I really resent him most days. He makes things difficult for me and is incapable of seeing the situation from my POV. I'm just feeling hopeless, lonely, and not sure how to proceed. Is there a way to move forward?