I would suggest that you do some reading on here. What you describe might just be a version of your own poly... but it is similar to many others. You are not all that unique, just unique to your own description. Everyone does things according to their own comfort level. It sounds like you have some fluid boundaries going on that mean that there is room for change and growth as time goes on... never say never is a good motto to have in poly.
I would suggest doing some searches on here, perhaps in the tags to find some ideas and answers that are unique to you. Your master will also find that there are plenty that live with a woman who is intimate and involved with others... myself being one.
Your post indicates to me that you have a lot to read and catch up on....
enjoy, there is a lot to read