Woman doesn't like sex=withholding
Man doesn't like sex=he finds a new sex partner. Same positions but new pieces.
Woman gets mad=withholding
Man gets mad=dirty sex.
Men and Women think differently. If Mark was willing to walk out because of it, his wife couldn't use that tactic. But they both know he isn't walking [not divorce just like leave] and he won't hold out. So it works. But in reality, she really isn't THAT into him. If she was, she wouldn't deny herself all that sweet lovin!