How do you feel when a guy with a wife/gf checks you out?

I know this is often worded as the "do you mind if your SO checks out other women?" But I personally don't think anyone looks at it from the third party's perspective. I don't care if you're cool with your SO looking at other people or if your SO claims they "can't help it." It makes me feel fucking gross. It's one thing if it's like a quick look because "oh shit there's a person there." And they didn't want to bump into me or they're just taking in their surroundings, but I think we can all tell when a guy is checking us out, no matter how quick the glance. I fucking hate it, like you're literally walking down the street holding hands with your woman but looking at me, look at her! I just feel like it's disrespectful to their wives/gfs and I really dislike it. Anybody else feel this way?