Credit: ABC Photo: Gina, Castle's Second Wife

Oh, Nathan Fillion. Why you always gotta be startin' somethin'?

The incorrigible Castle star recently tweeted that he'd love to have actress Monet Mazur return to the show. The only thing worse than having Rick's ex-wife Gina back? Having Josh back!

"Does everyone remember Castle's lovely ex-wife? Tell @Monet_Mazur we miss her and want to see her on the show again! Cat fight!"

Cat fight? Didn't we have enough of that in last week's episode?

What do you think, Castle fans? Should Gina return to shake things up in the 12th precinct, or does the thought of Castle with another women — especially one he was married to! — make your blood boil?

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