Cherry Hon you're right about most men dreaming of being with 2 women but in my opinion the answer to what it reflects about your relationship depends on attitude. If you two see it as sharing your relationship with someone and both make sure the 3rd party enjoys it, that would seem OK. If you're doing it to satisfy his fantasy... would he in return offer you the same thing? (MMF) It's the old goose and gander thing.... just my thoughts.

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As to marriage or celibacy, let a man take which course he will. He will be sure to repent - Socrates

Love is not looking in each other's eyes, but looking together in the same direction - Antoine De Saint-Exupery