I dunno... OPs husband knows that dudes are looking at his wife and knows they are all saying to them selves "I want to fuck that woman". Guys aren't appreciating her outfit. They're attracted to what's being revealed. So, to me.. it's not that far fetched to think that he may have a deep down fetish of his wife being intimate with another man. That's fine for him to have that kink! It's not my thing. But, if he does have that kink, he should be open and talk to his wife about it. I feel like she wouldn't be in to it if she doesn't like the attention that he obviously seeks for her. It's one thing to want your significant other to dress up and feel good or even sexy about them selves. It's a bit of a different situation when someone gets turned on by other people looking at their significant other.