Hopeful cuckold

I am like many men I have a hotwife that I would love see pleased by another man! I am not interested in the humiliation part of it bc she is not into that either. She finds the thought of me watching her pleasured super hot but is very shy and never really wants to set anything up with anyone. She is very pretty and has a curvy figure not skinny but not fat by any means. I am just curious if anybody out there has dealt with a similar situation where the wife likes the idea but getting her to do it is a supper big challenge. Would love some helpful suggestions!!