Sarah Ferguson, the Duchess of York, has been seen rowing at a meal with her rumoured millionaire boyfriend.

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Sarah – the ex-wife of Prince Andrew – dined at exclusive London curry restaurant Chutney Mary with Norwegian tycoon Geir Frantzen, despite reports last week which suggested the couple had split.

A source is quoted in the Daily Telegraph as saying: “They seemed very affectionate, at least to start with. Then things seemed to get a bit heated over the curry and voices were raised. At one point I thought she was going to deposit it over her boyfriend’s head.”

The relationship between the 48-year-old duchess and Geir – owner of frozen food company Findus -has been the source of much gossip over recent weeks.

Sarah, who previously described Geir as a “close friend”, fuelled romance rumours after she was seen without her ruby and diamond engagement ring, which she had continued to wear despite her divorce from Andrew being finalised in 1996.

Geir, who is eight years Sarah’s junior, was also said to have splashed out on a £130,000 car for her.

However, it was recently reported the pair were no longer close after their relationship “fizzled out”.