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Selena Gomez turned 22 this week, and it looks like she had a great birthday!

The pop star enjoyed some fun in the sun in St. Tropez with some friends, including Cara Delevigne, and a handsome new guy ... she was spotted on the back of his jet ski!

So who is this cute mystery man? His name is Tommaso (a.k.a. Tommy) Chiabra. Tommy is the founder of Royal Yacht Supplies, and according to, was last linked to actress Jessica Szohr from "Gossip Girl." 

Justin WHO?! 

It looks like Selena enjoyed her special day, and called the "BEST birthday yet!" She shared on Twitter:

Happy Birthday Selena!

Check out more pics from her birthday celebration below!

PHOTOS: 22 Reasons We Love Selena Gomez

Photo: Pacific Coast News