Sex with others

Would love to watch her getting laid by somebody else, not sure how I'd react tho

OH and I are thinking about trying this. It'd have to be with another woman as a man would make him uncomfortable (not that I would mind for either =p) however we have no idea where to go about finding someone to do this with (we really don't want to have any "emotional" attachment to the other woman) so if anybody has any suggestions, tips etc. Also on how to make the whole thing a bit more natural (I get the impression that this could be very awkward to begin with) I would very much appreciate it