Things are heating up between Prince Harry and his new girlfriend, Camilla Thurlow. The royal, 29, took the 25-year-old along with him on a luxury vacation to celebrate his impending 30th birthday on Sept. 15.

He took Thurlow, who he was first linked to last month after his split from Cressida Bonas, with him to party with his friend Ben Goldsmith and his financé Jemima Jones.

”It's a sign that he's really smitten with Camilla that he feels comfortable to invite her away with friends he's known for years,” a source told Us Weekly.

Another insider also said Prince Harry wants to “settle down” and has been "thinking about what he wants in life” with this milestone birthday coming up.

Thurlow works at the non-profit organization The Halo Trust as projects officer and she is a former Miss Edinburgh. Harry's late mother, Princess Diana, was involved in the charity.

The foursome left for Saint-Tropez this past Saturday, where they will enjoy a luxury yacht complete with seven bedrooms, a helipad and a gym.

image via Zak Hussein/INFphoto.com