Thank you for your input. I realized I put some emphasis on the sex part of it- I misrepresented that aspect. Sex is not necessary as a part of our relationship -at all. If he finds someone that he clicks with, and hopefully all of us click with, then so much the better. If she is or isn't interested in sex with some or all of us, doesn't really matter, but I wouldn't want someone to be scared off by knowing what's going on and it's possibilities.
Of course we're all for honesty, but you know that being too honest too fast can be a bad thing. We're still learning how to tiptoe.
"In a full heart there is room for everything, and in an empty heart there is room for nothing." -A. Porchia