Martin Miller, 30, and his wife Daniela, 24, had brought homeless 20-year-old Michael Chaney into their house and had a threesome with him, before things took a nasty turn.
Mrs Miller and the homeless man continued to stay intimate for three days after the threesome without Mr Miller’s knowledge, a Bay City, Michigan court heard – and things blew up when Mr Chaney offered to cook hamburgers for them all.
The married couple were in the bathroom, with Mrs Miller in the tub, when Mr Chaney brought up some burger meat for them to taste.
Mr Miller tossed the meat into the bath – and did the same again when his guest returned with more.
Mr Chaney told him to stop wasting food and left the room, so Mr Miller followed him and told him he would beat him up.