Is it normal that i want to see my wife have sex with another man?

My wife and I slowly fell into what i guess can be classified as a swinger relationship. we are friends with another couple and over time, getting together went from dinner and cards to dinner, cards, sexual jokes, to some flashing to some stripping and months later, swapping. Its not everytime and it's usually very "spur of the moment". but this experience has opened up the both of us to new ideas and new thoughts. One that i've had recently is that I would really sit a bar somewhere away from my wife and watch her come in, sit down order a glass of wine, wearing something that obviously says "look at my chest". i think i want to see her approached, flirt and then have some guy sit down next to her and start up a conversation for a while. I'm torn on the idea of having her go home with a stranger, but i guess if she really wanted to, i wouldn't mind. Something else I want to watch once is her having sex with another guy. I don't we could do the whole bar scence and then spring it on a guy, but i'm wondering how we go about finding someone who might be willing to have sex with my wife while I watch. I don't want to sit in a dark corner either. I want to be not far from her and have her talk to me some while she's having sex. The bar thing I think i can pull off on our own, but does anyone know where or how to find someone who would be into this kind of sex with a woman?