I guess you could see open relationships as one resolution to that trinity. The others then being: - greater reliance on same-sex friend groups (spouse lacking

I guess you could see open relationships as one resolution to that trinity. The others then being: - greater reliance on same-sex friend groups (spouse lacking as a best friend) - Keeping aspects like finances split, or surrendering management of this or that aspect completely to one or the other partner All three resolutions have been a part of successful relationships, though not necessarily together.