"Just because they're happy together, doesn't mean they're not sleeping with others."

“You mean as in Dan Savage’s idea that marriages should be non-monogamous? I can’t really see it working for heterosexual couples. — Not yet, but we couldn’t see premarital sex once either. We are a generation that believes in self-fulfillment, but also in commitment, and in their negotiations between these two ideas they will come up with new negotiations around monogamy...It doesn’t mean it will fit everybody. But I do believe it’s the next frontier.”

— "Why We Cheat" via Slate Magazine