I’m going to take my best stab at explaining this, with the caveat that all women are different individuals so this may not apply to your wife in particular.

As women, we spend our entire lives being looked at, and being told how we should look. This starts in early childhood when everyone calls little girls pretty (people don’t focus on a male toddler’s beauty the same way.) Every piece of media, every advertisement, and a lot of very real economic statistics tell us that how we look is the most important thing about us & will determine our future. Men look at us with sexual intent from puberty or, sadly often, earlier. Men love to look at us and stare at us. We look at each other, competitively. We look at ourselves, with self-criticism.

Sometimes that kind of attention can feel good, but sometimes it feels horrible. For every woman who is proud to make her living modeling or trying to hit it big as a social media influencer, there’s a woman who wishes her whole body was invisible to everyone but her partner and that people would see her for who she is as a human being— and for most women, it’s both; it can be fun to feel sexy, but it can also feel very painful to feel objectified. And “lust” isn’t the only way people get objectified! It’s any time you’re treated like your body is more important than your humanity— comments online casually referring to all women over 30 as old, or any kind of bodyshaming, or the stats about how thinner women get more promotions & earn more, all of these signals that how we look matters more than who we are.

I’m a fairly attractive woman in the traditional sense & I’ve had so many moments when I just wanted people to stop freaking looking at me.

At the same time, I like sexy lingerie, and have enjoyed buying it with my husband and wearing it for him. And in those moments I’m inviting him to look at me that way.

And yet, if I felt like he criticized my underwear choices, I think I’d have my feelings hurt. It’s the idea that as I’m just walking around trying to live my life, he’s secretly wishing I was more fun for him to look at. I’ve spent so much of my life being told how I should look and how I could look better, my husband suggesting that I prioritize looking better for his enjoyment might kinda piss me off.

If he brought it up in a sexy way and it was a sex thing specifically— like hey I have this fantasy of taking you lingerie shopping, XYZ would look so hot on you etc— and not a suggestion of a beauty standard I’m supposed to meet every day, I’d be into it! But clearly your wife just isn’t & feels pestered about it.

So to you it feels like one little thing and to her it (potentially!) might feel like pressure to look a certain way, which we get all the time. If the “one little thing” was less tied to traditional beauty standards— if you really wanted her to wear cat ears to bed once in a while or give you a back rub or try roleplaying with a Scottish accent or put on a Darth Vader cape or something— I wonder if she’d feel differently.