Pfeiffer insists she has never had any interest in cheating on the Ally McBeal creator - because he's the best guy she has ever met.
The Dark Shadows star tells Parade magazine, "I chose really well with David. I got really lucky... I've never met a person who has more integrity than my husband. I respect that.
"There's his humour an intelligence too - and he's really cute, all those things."
But she thinks it's her respect for him that keeps them together in Hollywood: "If you don't respect your partner, you'll get sick of him."