In the days after Donald Trump Jr. was seen holding hands with Florida socialite Bettina Anderson, PEOPLE has learned that he and fiancée Kimberly Guilfoyle have broken up. A source says it 'is not a contentious split.

President Trump named Guilfoyle the United States ambassador to Greece on Tuesday. The announcement came just hours after the Daily Mail published a story titled, “Donald Trump Jr. is seen flaunting his romance with socialite Bettina Anderson in Palm Beach

It was an announcement made amid a swirl of tabloid speculation: Kimberly Guilfoyle, a loyalist of President-elect Donald J. Trump and — more pointedly — the fiancée of his son Donald Jr., had been named as his choice to be ambassador to Greece.