Oh there's lots you can do!
My biggest thing is making a healthy, balanced meal, and making sure that I serve myself, and my boyfriend serves himself. That way we each get the portion size we want/need, without me overeating or him starving.
Stirfries are quick, easy and balanced. They're easy to work around dietary restrictions, too.
Last night we had spinach and cheese tortellini tossed in balsamic vinegar, with steamed broccoli and carrots. I had a small serving of the pasta, and loaded up on veg, while my boyfriend did the opposite.
We often make tacos with ground turkey (leaner than beef), and then we can each load them up with what we want. For me, that means salsa, lettuce, cucumber, etc, with a touch of low fat sour cream. For my boyfriend, it means lettuce and cheese.
You'll have to play around with things to find what he likes and will eat. I find that the more my boyfriend sees the veggies as an option, the more he'll start loading up on them. If they're not there, he won't ask for them or make them.
