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Throughout US history, the first couple at least attempted to make a show of happy families.
But, in a presidency of many firsts, Donald Trump's wife Melania has been spotted grinning the moment her husband looks away, appearing to slap his hand away and, more recently, apparently ignoring him.
University of Washington sociologist Pepper Schwartz, a sex and relationships expert, thinks the evidence speaks for itself, he explained to Los Angeles Times.
These people are under constant scrutiny. Has anyone ever seen a loving gesture between them?
Recent weeks have put the President and First Lady's relationship under particularly stringent scrutiny.
Donald Trump was alleged to have had an affair with porn star Stormy Daniels, whose real name is Stephanie Clifford - a charge he denies.
In the wake of the scandal, Melania cancelled plans to travel with her husband to the World Economic Forum in Davos last month, amid reports she had been sleeping at a Washington DC hotel.
On Friday, the First Lady travelled alone Andrews Air Force Base rather than with her husband, citing a scheduling issue.
HT Los Angeles Times
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