I was always very thin up until about 3-4 years ago. I gained a ton of weight- maybe 70lbs over the past 3-4 years. My husband never commented when I was thin nor does he comment now that I am very over weight. We have been together for almost 20 years. He’s not really heavy but he loves food. I know the source of my weight gain is part age, part hormone issues and constant eating out or ordering in. I have not read all the comments but maybe your fiancé just likes you with a little more meat? Or maybe he just doesn’t notice one way or the other if you’ve gained or not. I would just highly stress to him that you still want to eat with him, but something different from what he’s having. If junk food is becoming an issue, weather it be candy, cake, potato chips, soda or whatever..just try swapping out with small changes. If you want to snack with him-then buy pop chips (they come in several flavors) or make pop corn-without butter. If he’s having..I don’t know...a cheesesteak or pizza for dinner...then get yourself a panini or a healthy version of pizza(gluten free, vegan, or a newer thing is cauliflower crust pizza). If he orders fried chicken, order yours baked. It’s okay if you want to watch your weight and he doesn’t want to watch his. Just tell him bluntly. “I love you, but I’m watching my waistline. So eat what you want and I’ll eat what I want and we can still enjoy our meals together”