Wife and I have been married for 20 years. I recently started sharing with her fantasies I have and one of them was a MFM threesome with her and she wasn't opposed. She didn't jump out and say NO WAY, she wanted to know how we would proceed. She has asked good questions and we have had good discussions and she seems willing and open to taking the next step. So, what is the next step, want to hear from people who are married or in long term relationships and have had MFM threesomes and how that was arranged...