Comedian Adam Carolla has an interesting theory on Jennifer Aniston's romantic life.

"I don't think she repels men," Carolla said Thursday during an appearance on Bill Simmons' ESPN Radio show, The BS Report.

Since splitting with husband Brad Pitt more than five years ago, Aniston, now 41, has dated the likes of Vince Vaughn and John Mayer, but hasn't seemed to have found that special someone in a while.

Muses Carolla: "I think she probably has a lot of testosterone and probably thinks like a man…There are certain women out there, they say you can tell from the jaw line…they did some study that women who have sharp jaw lines…it's a masculine feature."

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"The point is," the comic says, "maybe she has a little too much testosterone and maybe she is a female version of one of these guys who bangs his way through Hollywood. Like a female Gerard Butler."

Butler, in fact, is the actor most recently connected to Aniston. The Bounty Hunter costars were "hooking up for a while" and were "friends with benefits," a source told Us Weekly in March.

(Aniston's rep denied that claim to Us.)

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