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.

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