Suddenly Divorced

My husband suddenly left me, saying nothing and a few days later the divorce papers arrived. He wanted out of the marriage asap according to the attached letter, which added to the shock. But I'm not one to gasp at straws and decided to agree only on my terms. Which he accepted, so the divorce progressed quickly as everyone was in agreement and no children involved. After everything was finalized, I felt free again. In no hurry to find another man, I moved on with my life. I met a woman, and we became friends then lovers. But I'm no lesbian, nor is she and we just had fun together. Then I met her twin brother, and he became my lover also and I got pregnant to him, and we married. That what he wanted, his sister still slept with me and then she got pregnant to her brother. Their parents were deceased, and they were all there was left in their family as far as they know. So, I live with my husband and his sister and that's just fine as far as I'm concerned. I don't mind sharing my husband with his sister and nor does she mind sharing her brother with me.