Did Pippa Middleton Split from Boyfriend?

By Alla Byrne and Simon Perry

11/14/2011 at 06:15 PM EST

Pippa Middleton may now be the world's most eligible bachelorette.

Duchess Catherine's younger sister and perhaps the world's best-known bridesmaid has reportedly split from longtime love Alex Loudon.

Middleton and her cricket player turned broker beau had been arguing a lot, especially in the wake of her newfound sex symbol status following the royal wedding, according to a U.K. newspaper.

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While the couple reportedly broke up over the summer and later reconciled, "This time it's over. They are barely speaking," a source tells Britain's The Sun.

Earlier this month, Middleton visited Kate and Prince William at the Balmoral estate in Scotland. The 27-year-old also has been spotted at a train station last weekend with George Percy, an old roommate from her college days.

Middleton, who was slated to attend the Square Mile Masked Ball on Nov. 25 but recently pulled out, is clearly keeping a low profile.