[bandit.45]

I reading posts from wayward spouses on other forums, the waywards who did this, almost to a person, said they did not even think about it when they invited the AP into their bedroom. They were so caught up in the affair that they did not give one smidgen of thought to how it would affect their spouse by doing this.

So again, it is not so much that they are out to deliberately humiliate the BS, but that the BS factors not at all in the compartmentalized thinking that goes into conducting an affair.