Well, that's the feeling I had, but I figured if there was a way to be safe about it and we had certain rules in place concerning that, I could be ok.
The other thing I'd really like answered is what is the best way to jump into this with no primary relationship? Or is it better to start with a primary? I can't find any stories where it's worked the way he's wanting to do it. It would be nice to have some sort of structure to build on.