I have the book called "Opening up". It explores many options of open relationships. If a triad- means three people and its part of polyamory living or lifestyle then what is the problem of a couple seeking just a single female or male for a relationship? How can it be all red flags and taboo and reeks of bad things if its what you and your mate are looking for to find fulfillment and happiness. I am open for any wisdom that someone wants to impart because I really dont get the problem that is always associated when someone posts this and I cant find a difinitive answer.