you don't sound silly. Perfectly valid question you have asked there... it sounds like you are already on your way to talking about it and telling them your thoughts. I think if I were you I would make a request and not invest too much in it... they very possibly will not be so keen. Meh, that's okay... just go yourself and tell them how it goes. They are both on their own journey with poly and while you can offer them ideas and ask that they join you... that is all you can do.
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