The Way of The Superior Man book talks about the masculine/feminine energy dynamic. A bit esoteric but still points towards a matching of inherent traits that are complementary in a monogamous relationship.

From what i understand the common RP perspective : The SMP defines that relationships, both mono and poly, are dynamic systems wherein AF/BB hypergamy dictates who a women will choose as a suitor at any given time. Right so far?

Then the third is the Sex at Dawn theory, but i think that is more radical than the other two but feel free to bring it up if it fits with your belief.

So the question is, are relationships more a relic of old survival necessities, playing out in a bastardized fashion in our modern world, or a key tenet of a civilised society?

What are your personal views on relationships and the ideal form for them both micro (your fulfilment) and macro (societal health)?