My husband literally eats double to quadruple the portions I do, yet remains 50 pounds lighter than me (we're the same height). If I make sandwiches, I'll have one while he'll have four! I'll take one scoop of no-sugar-added ice cream and his bowl will be overflowing with the full-sugar stuff. I rarely drink soda (maybe once a month, if that) and he'll easily go through a 12-pack a day.
We do tend to eat a lot of the same things, but I'll have a very small portion and will add some kind of healthy side or alternate main course to eat with it. Sometimes on the weekends he wants McDonald's for breakfast, usually three sandwiches (he's cut down, he used to get five!) and I'll hit the drive-thru for him. I
might get an Egg McMuffin for myself, but I usually just grab what he wants and fix myself some oatmeal once I get home.
He's got plenty of tempting treats in the house, but technically speaking, I do too. And I'm fine with that, as I've been feeling pretty in control lately.
I've got a containers of dark chocolate raspberry & mint M&M's tucked away in the cabinet, and I have a small amount every so often. He's got his ice cream, soda, tortillas, donuts, muffins, etc., and I leave them alone. I heated up a medium deli pizza from Walmart tonight, ate just one slice (he ate the rest!), and made myself a big spinach & arugula salad with homemade dressing to eat along with it.
Now mind you, it's taken me lots of time and realizations to reach this frame of mind, and I'm hoping it's something I can keep. I recently realized that I've been angry and bitter a long time over not feeling like I can eat like a "normal" person. Spending all of that energy feeling angry is not only wasteful, it's self-sabotage! If he wants to stop at DQ for example, I used to feel obligated to order something, like I was missing out if I didn't get a big treat too! I'm getting over that now. The last time we made a stop there on the way home from shopping, he got a milkshake, and instead of me getting my usual Blizzard, I shrugged off getting anything at all. And I was totally fine with it.
I think I've finally accepted the fact that I have to be careful with both my choices and my portions and that I can't worry about what the people around me are eating. And it's been quite liberating.