Yes, very bad idea to use this particular man.
As far as the anxiousness, I was on edge for the two weeks leadin up to our first dabble into the lifestyle, a MFM threesome. I mean up to his arriving at our hotel room door. We sat and talked for a bit. He was experienced in the lifestyle, respectful, and our talking alleviated much of the anxiety. And all of that was gone to be replaced by a great love for my wife as I gave her a gift of another man entering her and seeing her pleasure as they played. It was a most amazing experience, one I am not so patiently waiting to see again.