So what does Jennifer Aniston really think of Gerard Butler? Her hunky Bounty Hunter costar -- sans shirt! -- helped celebrate her upcoming 41st birthday (Feb. 11) in Cabo San Lucas Mexico last weekend with Courteney Cox, David Arquette and Sheryl Crow.

"We just had so much fun together, you know? He's just fun,” Aniston explained to Access Hollywood while still in Cabo. Aniston was snapped in a skimpy bikini as Butler joined her inner circle for the tropical getaway.

"I mean, Gerry's the most unpretentious guy," Aniston continued. "He's a guy's guy and he's absolutely the most lovely -- and sort of self depreciating -- and what you see is what you get."

The pair have been romantically linked -- but never confirmed -- since they began shooting The Bounty Hunter last year. They were snapped getting particularly flirty during January's Golden Globes.


But some in the blogosphere charged that Aniston and Butler's Cabo fun was a promotional stunt. Blog Zap2it snapped, "Sure is convenient how Jen always manages to get a 'boyfriend' right around the time one of her films is coming out. And it sure is convenient that she always gets great publicity from being photographed looking super hot in a bikini on her private get-away vacations."