Jennifer Aniston wasn't the only one showing off her bathing suit body in Mexico yesterday — her Bounty Hunter costar Gerard Butler stripped down in all his Shirtless glory by the pool. The fact that she brought him on the trip, which aligns with her 41st birthday, once again raises curiosity about their relationship. They're also with a few of Jennifer's closest friends like Courteney Cox, David Arquette and Sheryl Crow — see lots of photos of their trip here! Gerard is known as a bit of a player, but what do you think — does Jennifer bringing Gerard to Mexico convince you that they're romantic?