She must have read the book on how to win back an ex!

Selena Gomez is still abroad on vacation in St. Tropez, and the brunette beauty boarded a speedboat yesterday and was seen sitting very close to Israeli songwriter Eli Mizrahi! While we're almost positive he's just a pal, we think she's doing everything in her power to be seen with multiple men to make her ex-boyfriend Justin Bieber jealous!

The "Come & Get It" singer has been kicking back in the resort town with pal Cara Delevigne and rumored new love interest Tommy Chiabra. In addition to soaking in the sun, the Spring Breakers star took the opportunity to celebrate her 22nd birthday and attend the Leonardo DiCaprio Foundation gala, which raised $25 million to help protect earth's last remaining wild areas.

If this is an attempt to drive The Biebs back into her loving arms, it appears to be working! When we caught up with the JB yesterday in Beverly Hills and asked if he was still friends with his former lady love, he decided to send a message through the media by declaring, "She's beautiful!"

Miss Gomez is certainly playing her cards right this time around!