Cressida Bonas, 24, is "really sweet, easy to talk to and really funny," her former dance school classmate Becci Whelan tells PEOPLE in this week's cover story.
Since being introduced in July 2012 by Harry's cousin – and Bonas's close friend – Princess Eugenie, the pair, who have recently taken their year-long romance into the spotlight, have become "very serious," says a family source.
The daughter of a socialite mother and wealthy entrepreneur father, "Cressy" (as she is widely known to friends and family) shares a love of adventure, indie rock and late-night clubbing with the longtime playboy prince, 29.
Says the family source: "They are quite perfect for each other."
Tune in to Katie on Thursday for more on Prince Harry and Cressy, plus details of PEOPLE's Ones to Watch portfolio
For much more on the couple, including a look at how Cressy compares to Kate, pick up this week's issue of PEOPLE, on newsstands Friday