The close bond the two share became apparent when she asked Charles to walk her down the aisle after her father, Thomas, pulled out of the ceremony due to health complications.
Speaking on Good Morning Britain today, Mr Markle said he couldn't 'think of a better replacement than someone like Prince Charles'.
He said: 'He looked very handsome and my daughter looked beautiful with him. I was jealous I wish I'd been there I wish it had been me but thank god he was there and thank him for that. It might have been a treat for him as he never had a daughter.'
How sweet!