Jeremy pointed to out to the horrified man: "That was another man just answered your phone, relax, relax, it could be completely innocent.When Elizabeth answered, Jeremy asked: "Can I just confirm that you've got someone there with you?"
Viewers were convinced his wife had been caught out
Someone tweeted: "Well thats one way to expose your wife's a cheat.. ringing her phone for a question on who wants to be a millionaire and a bloke answering
"How awkward, phoning his wife for the phone a friend and a man answering , has an affair been exposed," said another
Horrified man took the money and left the show with £64,000.