How to deal with spouse being non vegan?

When I'm able to grocery shop, I explicitly only get vegan stuff, but my spouse will get stuff that has dairy/egg.

If we're unable to find vegan snacks at a particular shop when we're traveling, and she gets something really nice and im left eating something really unsubstantive, it really fucking sucks, and i repeatedly find myself eating some of her food.

ik the easy comment here is skill issue which ig it is just like, any advice aaaaaaaaaaaaaa