... Just, NO!
Subject line: Howdy!
Hi. I am married and in an open relationship. My wife and I love each other and are devoted to one another and to our family. We are best friends: more like bro and sis then lovers. We have set each other free to date other people. My wife is currently involved with another guy. She is happy, and so am I.
Um... No. Just. No. In fact, I think there are websites specifically set up for people into swinging. Maybe you should check one of THOSE out.