Many women do more than that when they're alone with themselves. But the contrived rules do not allow them to relax with a partner. It is not without reason they say, that a smart woman has it in her head, a fool has it in her mouth. I even know men who categorically reject such liberties.
Let's put it this way. Every man deserves the woman he has. In this case, the husband is a slacker. The wife brought the fucker and instead of immediately kicking the wife and lover out of the house, he just said a few phrases of objection that had no weight among those two. An even greater humiliation was when, after his wife had been fucked, they took and splattered cum on the husband's face and he again bitch-slapped.