"After lengthy conversations, they've taken what they call a 'permanent break,'" one insider close to the couple tells Us. Duchess Kate's little sister met Loudon, a 30-year-old cricketeer turned finance whiz, on a blind date set up by mutual pals.
"They hope to stay friends," adds a second source. "They're doing their best to move on in a dignified manner."
How is the handsome ex taking the news? "Alex is upset but getting on," a friend tells Us.
Although social butterfly Pippa has seemingly relished her newfound spotlight, Loudon's "life was turned upside down" ever since he was the outgoing, ever-stylish Maid of Honor's date for the royal wedding on April 29, his pal says.
Even before the confirmed breakup, Middleton set tongues wagging for her wedding day chemistry with Prince Harry (who's happily ensconced with love Chelsy Davy) and recent bonding time in Madrid and London with close friend/coworker George Percy.
To find out what the future holds for Britain's hottest bachelorette, pick up the new Us Weekly, on stands Wednesday.