I don’t really eat breakfast so I effectively intermittent fast while meanwhile she grabs several granola bars to head out the door. One of them is often a Metrx Big 100 which has like 400 calories.
I then have a responsible lunch at the office while meanwhile she pretty much never brings lunch and orders out basically every day. I’ve encouraged her to make it the time of day she takes a break from work and if she gets something heavy or indulgent it can be our little thing. She’s not into this fetish but that makes it more about us thinking of each other thru the day, which she likes.
At home I’m just not a real sweet tooth guy which helps, and while we eat the same dinner/weekend meals, I have slightly less (not really enough to be super obvious) and she sometimes has seconds. She has framed me in her mind as a “light eater” and she likes me trim so instead of it reflecting her opposite habits, she sees it more as me doing my thing and her being the “normal” one.
I also am more active when she’s not around. I go on a walk every day at lunch, tend to walk to the store instead of drive, use public transit which always has a walking component, etc. She is totally sedentary except for when we are doing stuff on the weekend, but that’s just incidental exercise.