I live with a non-lc'er ... who, while very supportive of me, swears he could never ever eat LC (hates veggies except for carrots & corn, lives for his cereal). I end up cooking 2 meals most of the time - ie. I make 2 lasagnas, one meat & veg LC one, 1 meat & cheese & noodle non-lc one. I will sometimes cook a main dish in common (ie. a roast or pork tenderloin) and then different sides - mashed potatoes & carrots for him, mashed cauliflower & green beans for me. It can be a bit exhausting, so I do a lot of cooking on the weekend and re-heat during the week. (Big batch of mashed cauliflower, pre-made dishes, cook the meat ahed of time).
I've found over time that he still eats his treats - chips & cookies etc., though I think he eats less since he's not also snacking WITH me, just when he's hungry, and he's eating way less bread, pasta & potatoes - I've even been able to sneak mashed cauliflower, lc gravy & lc yorkshire into his repertoire, and his evening snack is often now lc cheesecake or strawberries with whipped cream instead of mccain chocolate cake
(Though he's enjoying some homemade chocolate chip cookies as I type
) By letting him try a bit of something I've created to "replace" one of our regular foods, but not forcing it on him, he's often been receptive to eating my version in the future.
I think everyone makes their own choices - I know I would have been hurt, offended & angry if DBF had tried to critique my food choices in the past. I had to be ready to make changes for myself, and commit to these changes, for them to work. I use some awareness in how I cook (ie. trying not to drench his servings in butter etc.) and I've told him here and there WHY I'm eating the way I do and how it works for me... I think that's enough for some people to begin to naturally curb their carb consumption, even without realizing it.
I'd let him make his own choices.... if he finds he's gaining weight and is unhappy with it, seeing your success may point him in the right direction.
Also - if you're interested/worried/curious, why not Fitday a few days of his food?
Wynter