I don ' t believe people are naturally monogamous as a species but I am monogamous . I don ' t think that in your case it would do anything but create resentments . If you are not allowing her to date others that is an unequal dynamic . Have you ever thought that maybe your dynamic is related to unresolved issues she has with you ? They may just get stronger . I think open marriage could work but not when it appears you don ' t even trust one another <| sep |> Hmmm , that seems to be a houserule , since unless otherwise specifically notedlike for example in the battletome of the sylvaneth for placing 1 Wyldwood if you have the sylvaneth allegiance you are not allowed to setup scenery anymore after sides are chosen and armies are set up .