My roommate and I, also female, decided to let a guy live with us. After several months he went for me and succeeded in getting past my defenses and protest. Once I succumbed, my roommate gave in as well. We were now in a triad, one man with two girlfriends. Over the following year we worked out our roles and settled into a 'married' life.

Five years passed before we agreed to have some kids, he was forty and we were thirty. We were healthy and as it turned out, very fertile.

Ten years after we adopted our triad lifestyle we had four kids and a conventional home. I am pretty sure that what makes it work is that she and I talk out everything, we avoid conflict and are both submissive by nature. We are also pleasers and we don't suffer from jealousy.

We first agreed to live with him because we needed the money. After that we evolved.