A source revealed to the publication: “Edo and Dara were engaged for three-and-a-half years.
“He met Beatrice years ago when they were children, but he met her again at the wedding of Eugenie.
“Even after the romance began he continued to live at the family home with Dara and their child.”
Beatrice, 30, is believed to have "proudly introduced" her new beau to parents Prince Andrew and Sarah Ferguson.
Dara has refused to comment on the new couple.
“There have been many reports about Dara and Edoardo’s relationship but they are wrong," a friend said.
“Dara has not commented on anything and is refusing to speak to the press.
“She doesn’t want to say anything publicly at this stage. Her only concern is for the welfare of their son.”
The Royal Family is also yet to comment on Beatrice's new relationship.