Originally Posted by tiggerdatiger
... my partner let me know that it should only be 1 person out of a couple that becomes the main contact....
How to best phrase this...
Talk to Dennis as often as you wish. Plan whatever you wish. Keep your partner in the loop and hash out things that need to be coordinated among the three of you. Expect your partner to do the same.
When speaking of various forms of non-monogamy...it ain't poly if you're just fucking around.
While polyamory, open relationships, and swinging are all distinctly different approaches to non-monogamy, they are not mutually exlusive. Folks can, and some do, engage in more than one of them at a time--and it's all good.