They’ve grown upextremely close and played the role of best man at each other’s weddings, but it seems things may not be going so smoothly between the royal princes right now.

Prince Harry andMeghan Marklerecently decided to moveaway from their Kensington Palace neighbors, Prince William andKateMiddleton— and according to a friend of the royals, itmay bebecause of trouble between the two couples.

According to a palace source, Meghan and Katearen’t as close as we thought, and it’s starting to cause tension between the brothers.

“Kate and Meghan are very different people,” the source told theDaily Mail. “They don’t really get on.”

The palace confirmed that Harry and Meghanare moving to Frogmore Cottage (where they held their wedding reception) on the Windsor Estate early next year as they prepare for thearrival of their first child.The new home is said to need major work to be fit for the Duke and Duchess of Sussex, with plans reportedly to include10 bedrooms, a new nursery, a gym and a yoga studio.

Harry and Meghan, who currently live in a small cottage on the grounds of Kensington Palace, always planned to upsize, but it was thought they would occupy another palace unit the size of the one Kate and William live in.

“The initial plan was for Harry and Meghan to move out of their cottage in the grounds of Kensington Palace and into one of the main apartments,” a royal source toldThe Sun.“But there has been a bit of tension between the brothers.” (NAN)