Re: a non-traditonal family here...
I was a lot more open when I was younger... I was in an odd sort of threesome in high school. It wasn't quite a complete threesome, but it was more than a V. I had a strong emotional relationship with both of them, and we had an intimate relationship that stopped just short of going all the way. She wanted a threesome but she was too jealous to share him with me. I loved him with all my heart. Heck, I still love him. Don't get me wrong, I love my life and my family as it is now, but if anything ever happened to my husband he would be the first person I turned to.
As I've gotten older I've become more religious. I don't think I could be in another threesome, but I could handle having a sister-wife In fact, I think I would like it.