Jennifer Aniston Spends Birthday With Gerard Butler

 Image by Splash News

Let the hookup rumors begin! Jennifer Aniston loves Los Cabos, Mexico so much, she goes back every year for her birthday with a group of her closest friends. But this year she had a special guest--her 'The Bounty Hunter' co-star Gerard Butler.

According to People magazine, Aniston flew a large group of pals including Butler, Courteney Cox, her husband David Arquette and Sheryl Crow to the One & Only Palmilla resort Thursday evening where the group is staying in a beautiful waterfront villa.

Aniston and Gerard were super flirty with each other while at the Golden Globe awards together last month, so it looks like there may be something there after all!

Hey they're both super sexy and very single, so why not?!