Was in a pseudo poly relationship in my early 20's. I had a casual relationship with a girl and during that i hooked up with her co worker. I knew they would talk about me sooner or later so i talked to them(not the same time) and explained that i liked both of them. The first one didn't have a problem with it as lon as i kept up the frequency of us having sex and going on dates,the second one knew about the first one from rip and was okay as long as we kept it at the three of us and she could keep going on dates with me too. We had this relationship for over a year were i would be with girl A for two three days out the week and the same for girl B,with sundays my self day. It's not sustainable though,time,ego,feelings got in the way. I still rock with girl A though,she was a keeper.