She dated my son, wasn't family member: Trump on ousted US ambassador to Greece. US President Donald Trump distanced himself from Kimberly Guilfoyle after her removal as US ambassador to Greece, dismissing her past relationship with his son Donald Trump Jr. "She wasn't a member of my family...She, I guess, dated my son a long time ago," Trump told reporters at White House. Guilfoyle, Trump Jr's former fiancée, was removed following reports of misconduct.