This is a very friendly and accurate article on non-monogamy as we know it. A sample:
My husband and I met when we were very young, and after being together for a while we realised we wanted to try different things sexually. I had always been attracted to other men and wanted to experience sex with a woman.
Then when I was travelling I had an affair. As soon as I came home I told my husband and we decided to have an open relationship. He went on to find a lover. Then we had a threesome with the man I had slept with and from then on decided to have a completely open relationship (an arrangement that’s been in place now for 10 years). We both travel a lot for work, so we tend to meet lovers while we are away. We have also gone to swinger clubs together.
This is from The Guardian. Are we going mainstream?