Experts weigh in on Prince William's dating history with Kate Middleton.

Narrator Glynis Barber suggests Kate's integration into the Royal Family was difficult.

Kate and William initially dated very quietly.

Their relationship was only known to their closest circle of friends.

Royal author Robert Jobson confirms their relationship was low-key.

Prince Charles' past girlfriends reportedly called him "Sir," but William is not like that.

Kate, a commoner born into a middle-class family, faced unique challenges.

Kate and William's relationship has remained strong despite these challenges.

The couple ultimately married and have become a beloved part of the Royal Family.