My Wife Confessed

My fiance and I have been together for 10 years, we're practically married and we're already apart of eachothers families. The other week during sex I asked her to tell me her dirtiest, nastiest fantasy, I told her nothing was off limits. She made sure that I wouldn't be mad, I said no and to just tell me. What she said next, changed everything.
She said she wants me and my twin brother to have a threesome and she would want to watch us hook up in front of her then would want us to both fuck her at the same time. I asked who would fuck her ass and she said my brothers name, i was getting so turned on hearing this i asked her for more details. She said knowing while we're both fucking her, our balls would be slapping against eachother, then said she'd want to watch us give head to eachother and eventually watch us fuck. I was in shock but so turned on, we both came multiple times to this fantasy. I now ask myself if we should try and make it a reality sometime?