Advice from the ladies.

Ladies, My wife told me about 5 years ago her fantasy was to have two guys at the same time. This really turned me on so I set about trying to make this happen. We'd have friends over and swap partners for a bit of oral sex but that was it.

I gave one of my friends the green light to fuck my wife, I knew she was interested in him as his cock was alot fatter than mine. He set set to work and after a few months she fucked him.

She didn't know that my friend was keeping me well informed of his progress and thought I didn't know.
Anyway my friends wife was keen for us to have a foursome so we organised it, only trouble was when my friend and I started on my wife(orally that is) my friends wife freaked and lost the plot, which frightened the cuckolds brownie out of my wife. This was about 3 years ago. ]

We've talked about getting another man for her since but that's all it's been.
A couple of weeks ago I sat down and put all my thoughts down in words and sent my wife an e mail (so I couldn't wimp out of her getting it) telling her that I'd like her to have other men and for me to join in. She flat out refused saying I wanted to prostitute her to other men and that she was too old (she's 40 but still a stunner).
Where should I go from here??