Selena Gomez celebrated her 22nd birthday in St. Tropez yesterday with some friends we recognized, like Cara Delevingne, and others we didn't — like the mystery guy she was so obviously flirting with! While jet-skiing and chilling on a yacht, Selena cozied up with Tommaso Chiabra, and it seems like there is definitely something going on between them.

From the looks of these pictures, Selena was smiling like crazy whenever they were around each other.

selena gomez mystery guy

And when they struck up a conversation, they almost got as close as they were on that jet-ski!

selena gomez tommaso chiabra

While Selena has recently been linked to models Tanz Watson and Andre Hamman, she's smiling a lot around Tommaso. As if you needed any more proof that she enjoyed herself, Selena called her 22nd birthday her "best birthday yet" on Instagram. We wouldn't be surprised if it had to do with her new guy!

Do you think there's something going on between Selena and Tommaso? Would they make a cute couple? Let us know in the comments!