The article to which you referred me was very interesting. I have to give you credit. You handled the stress. What struck me is that couples adopting that lifestyle really have to nourish their primary relationship all the time. If there is any failure to communicate or any serious stress in the primary relationship, and each partner is free to date, the endorphins triggered by a new sexual relationship which, after all, is initially entered into with permission of the primary partner, makes the risk of marital breakdown even greater than in a monogamous marriage where one partner gets swept up in an affair. The only absolute requirements in any relationship are complete honesty and complete mutual consent. I hope none of my concerns ever trouble you.