Monk believes that a carefully negotiated and agreed open marriage “can be wonderfully affirming, creating an environment that encourages freedom of expression, stress reduction and contentment”.

An open marriage is one where both spouses consent to their partner having relationships with other people. Experts weigh in on how to define an open marriage.

My partner wants an open marriage – what should I do next? - Ethical non-monogamy is on the rise ...

O'Neill's definition of open marriage was more about opening oneself up to the world and not focusing on being a couple and nothing more. Interestingly, that is still the best marriage advice around.

I'm in an open marriage. Well, to be simultaneously more and less specific: I'm in a nonmonogamous marriage. An "open" marriage, in the nontraditional world, means that the couple may be having ...

Danielle, who has been in an open relationship with her husband for over a decade, says marriage, for them, is much bigger than sexual exclusivity.

Find out why one woman decided to enter an open marriage with her husband and how it has improved their relationship.

In For Love & Money this week, our columnist says navigating the choppy waters of an open marriage requires a whole lot more communication.