Gilberto Valle, 28, told Aly Khan, that he "longed to butcher and cook female meat" during an online chat last year.
Khan offered to provide a place in Pakistan to kill the woman once she was brought to India, FBI agent Corey Walsh testified yesterday.
Valle, dubbed the 'cannibal cop', is charged with conspiring to kidnap, rape, kill and eat women.
He is also charged with illegally accessing a government database to research potential victims, media reports said.
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Valle's defence lawyers claim he met friends on an extreme sexual fetish website and was merely fantasising and intended no violence.
No women were actually harmed.
FBI agent Walsh told the court about chats Valle participated last year with a New Jersey co-defendant and two co-conspirators: a man in Great Britain and Khan.
Both men posed on the internet as veterans of cannibalism who could teach Valle the skills he would need.
In several emails read by Walsh, Valle seemed eager to suggest his fiancee as an offering to Khan, though he added, "She is a sweet girl. I like her a lot. But I will move on."
There he said they could hang her from her feet and take turns sexually assaulting her before slitting her throat and cooking her.
"I just love the thought of stringing her upside down," Valle wrote in an email displayed to the jury.
He also said he would like "to see her suffer" and "slowly roast her until she dies."
The jury also heard how Valle plotted to kill and eat a former University of Maryland roommate, Andria Noble.