If you want your wife to be happy, and you do things to make her happy, that's nothing but genuine. If you had to adjust your automatic instruments for happy-making to suit her preferences, as long as it's known that you're doing that, that isn't dishonest.

If she asks you outright if you are interested in shopping... and you tell her you are... then I am pleased not to be your wife.

But this is me. As I have said, I could easily be an outlier. Maybe I'm the only person in the world who hates being lied to enough to really want this kind of honesty.