Fantasy at the moment. Will it cum true??

Just a quick description of us, My wife is a 50 year old BBW, who is really sexy and will try most things, I am on the large size, (too much beer), and like my wife I will try most things.
Lying in bed with my wife making love, she said to me "I have a fantasy to see you suck a man's cock and make him cum, and then be fucked by him.
Although I had never thought about it before, it made me really excited. She has played with my bum on several occasions and fucked me with her strap on. I must admit the thought of a man's pick inside me made me so horny, and as for sucking a man I would have no problems.
I said to her that my fantasy was to lie under her while another man was fucking her, and lick her clit as his prick slid in and out of her. She told me it will never happen, but I could tell that the idea of it in reality really excited her, her pussy juices were flooding, and she started asking questions, like would you like his prick to come out of my pussy and go into your mouth, would you lick it,and when he came in me would you clean my pussy of all his cum?
The way I came in her so quickly after her talking like that, showed her that I was up for it, even it it only happened the one time.
It would be another tick off item in my bucket list.And if we both enjoyed it, maybe more.
I keep telling her how excited the thought of fulfilling both our fantasies makes me, and I know the idea makes her really horny.
I am going to keep on persuading her to try our fantasies out, and try and find a genuine understanding guy, and get her to chat to him and allow him to convince her that it would be a "No strings attached"sexual encounter.
Just a short story at the moment, but if anything should happen And I hope it does I will put the follow up story on here.