Ok, I have some new information which leads me to change my original statement.
You see, the last time my other half and I discussed this subject was quite a few years ago. Now, this thread (and copious amounts of harrassment from G) prompted me to have that discussion again with him and to bring up his previous point of view. It turns out that he is now of the opinion that if everyone is consenting and it's all discussed, that it could work. He says that you have to make the decision then "not let it destroy you" after it's done.
After the last discussion we had about this, I was of the opinion that he would turn into "David" in the film and basically become this jealous ball of rage, but now he says that he's more secure and cuz he's older he would be able to handle it.
So, to sum up, I'm guna sh*g Robert Redford for a mil. If they chuck in Woody Harrelson, I'll do it for half a mil.. and If Wentworth Miller is even in the same room then it's free.
